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Finding the Fourth Proportional to 487,520.16, 672,841.25 and 272,704.78

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Solution

The fourth proportional to 487,520.16, 672,841.25 and 272,704.78 is: 376,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,520.16 : 672,841.25 = 272,704.78 : x
  2. Step 2: Convert to fraction form
    487,520.16/672,841.25 = 272,704.78/x
  3. Step 3: Cross multiply
    487,520.16x = 672,841.25 × 272,704.78
  4. Step 4: Simplify right side
    487,520.16x = 183,487,025,056.18
  5. Step 5: Solve for x
    x = 183,487,025,056.18/487,520.16
  6. Step 6: Final answer
    x = 376,368.08

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1.5x scale

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.