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Finding the Fourth Proportional to 438,840.28, 657,721.80 and 249,459.28

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Solution

The fourth proportional to 438,840.28, 657,721.80 and 249,459.28 is: 373,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,840.28 : 657,721.80 = 249,459.28 : x
  2. Step 2: Convert to fraction form
    438,840.28/657,721.80 = 249,459.28/x
  3. Step 3: Cross multiply
    438,840.28x = 657,721.80 × 249,459.28
  4. Step 4: Simplify right side
    438,840.28x = 164,074,806,668.30
  5. Step 5: Solve for x
    x = 164,074,806,668.30/438,840.28
  6. Step 6: Final answer
    x = 373,882.74

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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.