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Finding the Fourth Proportional to 261,485.14, 392,233.17 and 74,496.64

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Solution

The fourth proportional to 261,485.14, 392,233.17 and 74,496.64 is: 111,746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,485.14 : 392,233.17 = 74,496.64 : x
  2. Step 2: Convert to fraction form
    261,485.14/392,233.17 = 74,496.64/x
  3. Step 3: Cross multiply
    261,485.14x = 392,233.17 × 74,496.64
  4. Step 4: Simplify right side
    261,485.14x = 29,220,053,261.55
  5. Step 5: Solve for x
    x = 29,220,053,261.55/261,485.14
  6. Step 6: Final answer
    x = 111,746.52

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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.