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Finding the Fourth Proportional to 438,002.84, 657,121.06 and 138,489.04

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Solution

The fourth proportional to 438,002.84, 657,121.06 and 138,489.04 is: 207,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,002.84 : 657,121.06 = 138,489.04 : x
  2. Step 2: Convert to fraction form
    438,002.84/657,121.06 = 138,489.04/x
  3. Step 3: Cross multiply
    438,002.84x = 657,121.06 × 138,489.04
  4. Step 4: Simplify right side
    438,002.84x = 91,004,064,763.18
  5. Step 5: Solve for x
    x = 91,004,064,763.18/438,002.84
  6. Step 6: Final answer
    x = 207,770.49

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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.