Home / 398,309,179,248.73-549,668,323,445.97-215,406,280,893.41

Finding the Fourth Proportional to 398,309,179,248.73, 549,668,323,445.97 and 215,406,280,893.41

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Solution

The fourth proportional to 398,309,179,248.73, 549,668,323,445.97 and 215,406,280,893.41 is: 297,261,563,245.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,309,179,248.73 : 549,668,323,445.97 = 215,406,280,893.41 : x
  2. Step 2: Convert to fraction form
    398,309,179,248.73/549,668,323,445.97 = 215,406,280,893.41/x
  3. Step 3: Cross multiply
    398,309,179,248.73x = 549,668,323,445.97 × 215,406,280,893.41
  4. Step 4: Simplify right side
    398,309,179,248.73x = 118,402,009,278,412,350,291,968
  5. Step 5: Solve for x
    x = 118,402,009,278,412,350,291,968/398,309,179,248.73
  6. Step 6: Final answer
    x = 297,261,563,245.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.