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Finding the Fourth Proportional to 256,301.34, 384,462.69 and 87,937.47

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Solution

The fourth proportional to 256,301.34, 384,462.69 and 87,937.47 is: 131,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,301.34 : 384,462.69 = 87,937.47 : x
  2. Step 2: Convert to fraction form
    256,301.34/384,462.69 = 87,937.47/x
  3. Step 3: Cross multiply
    256,301.34x = 384,462.69 × 87,937.47
  4. Step 4: Simplify right side
    256,301.34x = 33,808,676,267.99
  5. Step 5: Solve for x
    x = 33,808,676,267.99/256,301.34
  6. Step 6: Final answer
    x = 131,909.87

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1.5x scale

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.