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Finding the Fourth Proportional to 372,124.75, 513,516.65 and 210,990.69

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Solution

The fourth proportional to 372,124.75, 513,516.65 and 210,990.69 is: 291,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,124.75 : 513,516.65 = 210,990.69 : x
  2. Step 2: Convert to fraction form
    372,124.75/513,516.65 = 210,990.69/x
  3. Step 3: Cross multiply
    372,124.75x = 513,516.65 × 210,990.69
  4. Step 4: Simplify right side
    372,124.75x = 108,347,228,687.45
  5. Step 5: Solve for x
    x = 108,347,228,687.45/372,124.75
  6. Step 6: Final answer
    x = 291,158.36

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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.