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Finding the Fourth Proportional to 487,351.82, 672,543.33 and 272,491.89

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Solution

The fourth proportional to 487,351.82, 672,543.33 and 272,491.89 is: 376,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,351.82 : 672,543.33 = 272,491.89 : x
  2. Step 2: Convert to fraction form
    487,351.82/672,543.33 = 272,491.89/x
  3. Step 3: Cross multiply
    487,351.82x = 672,543.33 × 272,491.89
  4. Step 4: Simplify right side
    487,351.82x = 183,262,599,554.71
  5. Step 5: Solve for x
    x = 183,262,599,554.71/487,351.82
  6. Step 6: Final answer
    x = 376,037.58

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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.