Home / 398,095,830.59-549,374,796.39-221,894,998.55

Finding the Fourth Proportional to 398,095,830.59, 549,374,796.39 and 221,894,998.55

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Solution

The fourth proportional to 398,095,830.59, 549,374,796.39 and 221,894,998.55 is: 306,216,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,095,830.59 : 549,374,796.39 = 221,894,998.55 : x
  2. Step 2: Convert to fraction form
    398,095,830.59/549,374,796.39 = 221,894,998.55/x
  3. Step 3: Cross multiply
    398,095,830.59x = 549,374,796.39 × 221,894,998.55
  4. Step 4: Simplify right side
    398,095,830.59x = 121,903,519,650,060,208
  5. Step 5: Solve for x
    x = 121,903,519,650,060,208/398,095,830.59
  6. Step 6: Final answer
    x = 306,216,519.45

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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.