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Finding the Fourth Proportional to 266,332.08, 399,555.72 and 79,358.64

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Solution

The fourth proportional to 266,332.08, 399,555.72 and 79,358.64 is: 119,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,332.08 : 399,555.72 = 79,358.64 : x
  2. Step 2: Convert to fraction form
    266,332.08/399,555.72 = 79,358.64/x
  3. Step 3: Cross multiply
    266,332.08x = 399,555.72 × 79,358.64
  4. Step 4: Simplify right side
    266,332.08x = 31,708,198,543.42
  5. Step 5: Solve for x
    x = 31,708,198,543.42/266,332.08
  6. Step 6: Final answer
    x = 119,055.12

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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.