Home / 438,579.60-657,339.57-213,602.82

Finding the Fourth Proportional to 438,579.60, 657,339.57 and 213,602.82

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Solution

The fourth proportional to 438,579.60, 657,339.57 and 213,602.82 is: 320,146.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,579.60 : 657,339.57 = 213,602.82 : x
  2. Step 2: Convert to fraction form
    438,579.60/657,339.57 = 213,602.82/x
  3. Step 3: Cross multiply
    438,579.60x = 657,339.57 × 213,602.82
  4. Step 4: Simplify right side
    438,579.60x = 140,409,585,849.59
  5. Step 5: Solve for x
    x = 140,409,585,849.59/438,579.60
  6. Step 6: Final answer
    x = 320,146.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.