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Finding the Fourth Proportional to 372,000.73, 513,401.11 and 210,838.47

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Solution

The fourth proportional to 372,000.73, 513,401.11 and 210,838.47 is: 290,979.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,000.73 : 513,401.11 = 210,838.47 : x
  2. Step 2: Convert to fraction form
    372,000.73/513,401.11 = 210,838.47/x
  3. Step 3: Cross multiply
    372,000.73x = 513,401.11 × 210,838.47
  4. Step 4: Simplify right side
    372,000.73x = 108,244,704,528.70
  5. Step 5: Solve for x
    x = 108,244,704,528.70/372,000.73
  6. Step 6: Final answer
    x = 290,979.82

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1.5x scale

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.