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Finding the Fourth Proportional to 438,227.28, 657,345.60 and 138,702.24

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Solution

The fourth proportional to 438,227.28, 657,345.60 and 138,702.24 is: 208,054.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,227.28 : 657,345.60 = 138,702.24 : x
  2. Step 2: Convert to fraction form
    438,227.28/657,345.60 = 138,702.24/x
  3. Step 3: Cross multiply
    438,227.28x = 657,345.60 × 138,702.24
  4. Step 4: Simplify right side
    438,227.28x = 91,175,307,174.14
  5. Step 5: Solve for x
    x = 91,175,307,174.14/438,227.28
  6. Step 6: Final answer
    x = 208,054.84

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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.