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Finding the Fourth Proportional to 238,578, 357,869.16 and 72,366

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Solution

The fourth proportional to 238,578, 357,869.16 and 72,366 is: 108,549.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,578 : 357,869.16 = 72,366 : x
  2. Step 2: Convert to fraction form
    238,578/357,869.16 = 72,366/x
  3. Step 3: Cross multiply
    238,578x = 357,869.16 × 72,366
  4. Step 4: Simplify right side
    238,578x = 25,897,559,632.56
  5. Step 5: Solve for x
    x = 25,897,559,632.56/238,578
  6. Step 6: Final answer
    x = 108,549.66

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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.