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Finding the Fourth Proportional to 372,124.87, 513,516.82 and 210,990.81

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Solution

The fourth proportional to 372,124.87, 513,516.82 and 210,990.81 is: 291,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,124.87 : 513,516.82 = 210,990.81 : x
  2. Step 2: Convert to fraction form
    372,124.87/513,516.82 = 210,990.81/x
  3. Step 3: Cross multiply
    372,124.87x = 513,516.82 × 210,990.81
  4. Step 4: Simplify right side
    372,124.87x = 108,347,329,800.42
  5. Step 5: Solve for x
    x = 108,347,329,800.42/372,124.87
  6. Step 6: Final answer
    x = 291,158.53

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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.