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Finding the Fourth Proportional to 487,295.10, 672,529.02 and 272,447.88

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Solution

The fourth proportional to 487,295.10, 672,529.02 and 272,447.88 is: 376,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,295.10 : 672,529.02 = 272,447.88 : x
  2. Step 2: Convert to fraction form
    487,295.10/672,529.02 = 272,447.88/x
  3. Step 3: Cross multiply
    487,295.10x = 672,529.02 × 272,447.88
  4. Step 4: Simplify right side
    487,295.10x = 183,229,105,737.48
  5. Step 5: Solve for x
    x = 183,229,105,737.48/487,295.10
  6. Step 6: Final answer
    x = 376,012.62

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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.