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Finding the Fourth Proportional to 438,070.56, 657,170.24 and 138,483.15

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Solution

The fourth proportional to 438,070.56, 657,170.24 and 138,483.15 is: 207,745.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,070.56 : 657,170.24 = 138,483.15 : x
  2. Step 2: Convert to fraction form
    438,070.56/657,170.24 = 138,483.15/x
  3. Step 3: Cross multiply
    438,070.56x = 657,170.24 × 138,483.15
  4. Step 4: Simplify right side
    438,070.56x = 91,007,004,229.04
  5. Step 5: Solve for x
    x = 91,007,004,229.04/438,070.56
  6. Step 6: Final answer
    x = 207,745.08

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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.