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Finding the Fourth Proportional to 493,377.62, 740,011.35 and 138,405.38

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Solution

The fourth proportional to 493,377.62, 740,011.35 and 138,405.38 is: 207,592.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,377.62 : 740,011.35 = 138,405.38 : x
  2. Step 2: Convert to fraction form
    493,377.62/740,011.35 = 138,405.38/x
  3. Step 3: Cross multiply
    493,377.62x = 740,011.35 × 138,405.38
  4. Step 4: Simplify right side
    493,377.62x = 102,421,552,101.06
  5. Step 5: Solve for x
    x = 102,421,552,101.06/493,377.62
  6. Step 6: Final answer
    x = 207,592.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.