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Finding the Fourth Proportional to 266,581.68, 367,915.14 and 153,402

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Solution

The fourth proportional to 266,581.68, 367,915.14 and 153,402 is: 211,713.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,581.68 : 367,915.14 = 153,402 : x
  2. Step 2: Convert to fraction form
    266,581.68/367,915.14 = 153,402/x
  3. Step 3: Cross multiply
    266,581.68x = 367,915.14 × 153,402
  4. Step 4: Simplify right side
    266,581.68x = 56,438,918,306.28
  5. Step 5: Solve for x
    x = 56,438,918,306.28/266,581.68
  6. Step 6: Final answer
    x = 211,713.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.