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Finding the Fourth Proportional to 372,186.87, 513,616.46 and 202,423.83

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Solution

The fourth proportional to 372,186.87, 513,616.46 and 202,423.83 is: 279,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,186.87 : 513,616.46 = 202,423.83 : x
  2. Step 2: Convert to fraction form
    372,186.87/513,616.46 = 202,423.83/x
  3. Step 3: Cross multiply
    372,186.87x = 513,616.46 × 202,423.83
  4. Step 4: Simplify right side
    372,186.87x = 103,968,209,972.12
  5. Step 5: Solve for x
    x = 103,968,209,972.12/372,186.87
  6. Step 6: Final answer
    x = 279,344.11

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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.