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Finding the Fourth Proportional to 661,530.92, 992,624.40 and 262,162.86

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Solution

The fourth proportional to 661,530.92, 992,624.40 and 262,162.86 is: 393,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,530.92 : 992,624.40 = 262,162.86 : x
  2. Step 2: Convert to fraction form
    661,530.92/992,624.40 = 262,162.86/x
  3. Step 3: Cross multiply
    661,530.92x = 992,624.40 × 262,162.86
  4. Step 4: Simplify right side
    661,530.92x = 260,229,251,609.78
  5. Step 5: Solve for x
    x = 260,229,251,609.78/661,530.92
  6. Step 6: Final answer
    x = 393,374.28

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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.