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Finding the Fourth Proportional to 261,752.64, 392,691.68 and 84,276.32

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Solution

The fourth proportional to 261,752.64, 392,691.68 and 84,276.32 is: 126,434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,752.64 : 392,691.68 = 84,276.32 : x
  2. Step 2: Convert to fraction form
    261,752.64/392,691.68 = 84,276.32/x
  3. Step 3: Cross multiply
    261,752.64x = 392,691.68 × 84,276.32
  4. Step 4: Simplify right side
    261,752.64x = 33,094,609,685.02
  5. Step 5: Solve for x
    x = 33,094,609,685.02/261,752.64
  6. Step 6: Final answer
    x = 126,434.67

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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.