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Finding the Fourth Proportional to 372,658.32, 514,242.54 and 211,516.65

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Solution

The fourth proportional to 372,658.32, 514,242.54 and 211,516.65 is: 291,878.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,658.32 : 514,242.54 = 211,516.65 : x
  2. Step 2: Convert to fraction form
    372,658.32/514,242.54 = 211,516.65/x
  3. Step 3: Cross multiply
    372,658.32x = 514,242.54 × 211,516.65
  4. Step 4: Simplify right side
    372,658.32x = 108,770,859,348.29
  5. Step 5: Solve for x
    x = 108,770,859,348.29/372,658.32
  6. Step 6: Final answer
    x = 291,878.25

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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.