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Finding the Fourth Proportional to 398,052.70, 597,079.05 and 256,335.10

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Solution

The fourth proportional to 398,052.70, 597,079.05 and 256,335.10 is: 384,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,052.70 : 597,079.05 = 256,335.10 : x
  2. Step 2: Convert to fraction form
    398,052.70/597,079.05 = 256,335.10/x
  3. Step 3: Cross multiply
    398,052.70x = 597,079.05 × 256,335.10
  4. Step 4: Simplify right side
    398,052.70x = 153,052,317,989.66
  5. Step 5: Solve for x
    x = 153,052,317,989.66/398,052.70
  6. Step 6: Final answer
    x = 384,502.65

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Similar ratio
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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.