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Finding the Fourth Proportional to 493,363.40, 740,045.10 and 138,437.60

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Solution

The fourth proportional to 493,363.40, 740,045.10 and 138,437.60 is: 207,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,363.40 : 740,045.10 = 138,437.60 : x
  2. Step 2: Convert to fraction form
    493,363.40/740,045.10 = 138,437.60/x
  3. Step 3: Cross multiply
    493,363.40x = 740,045.10 × 138,437.60
  4. Step 4: Simplify right side
    493,363.40x = 102,450,067,535.76
  5. Step 5: Solve for x
    x = 102,450,067,535.76/493,363.40
  6. Step 6: Final answer
    x = 207,656.40

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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.