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Finding the Fourth Proportional to 487,462.50, 672,692.58 and 272,600.55

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Solution

The fourth proportional to 487,462.50, 672,692.58 and 272,600.55 is: 376,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,462.50 : 672,692.58 = 272,600.55 : x
  2. Step 2: Convert to fraction form
    487,462.50/672,692.58 = 272,600.55/x
  3. Step 3: Cross multiply
    487,462.50x = 672,692.58 × 272,600.55
  4. Step 4: Simplify right side
    487,462.50x = 183,376,367,288.92
  5. Step 5: Solve for x
    x = 183,376,367,288.92/487,462.50
  6. Step 6: Final answer
    x = 376,185.59

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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.