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Finding the Fourth Proportional to 372,124.65, 513,516.51 and 210,990.60

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Solution

The fourth proportional to 372,124.65, 513,516.51 and 210,990.60 is: 291,158.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,124.65 : 513,516.51 = 210,990.60 : x
  2. Step 2: Convert to fraction form
    372,124.65/513,516.51 = 210,990.60/x
  3. Step 3: Cross multiply
    372,124.65x = 513,516.51 × 210,990.60
  4. Step 4: Simplify right side
    372,124.65x = 108,347,156,554.81
  5. Step 5: Solve for x
    x = 108,347,156,554.81/372,124.65
  6. Step 6: Final answer
    x = 291,158.24

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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.