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Finding the Fourth Proportional to 487,633.62, 672,990.24 and 272,828.10

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Solution

The fourth proportional to 487,633.62, 672,990.24 and 272,828.10 is: 376,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,633.62 : 672,990.24 = 272,828.10 : x
  2. Step 2: Convert to fraction form
    487,633.62/672,990.24 = 272,828.10/x
  3. Step 3: Cross multiply
    487,633.62x = 672,990.24 × 272,828.10
  4. Step 4: Simplify right side
    487,633.62x = 183,610,648,497.74
  5. Step 5: Solve for x
    x = 183,610,648,497.74/487,633.62
  6. Step 6: Final answer
    x = 376,534.02

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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.