Home / 381,885.47-527,002.14-209,814.54

Finding the Fourth Proportional to 381,885.47, 527,002.14 and 209,814.54

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Solution

The fourth proportional to 381,885.47, 527,002.14 and 209,814.54 is: 289,544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,885.47 : 527,002.14 = 209,814.54 : x
  2. Step 2: Convert to fraction form
    381,885.47/527,002.14 = 209,814.54/x
  3. Step 3: Cross multiply
    381,885.47x = 527,002.14 × 209,814.54
  4. Step 4: Simplify right side
    381,885.47x = 110,572,711,583.12
  5. Step 5: Solve for x
    x = 110,572,711,583.12/381,885.47
  6. Step 6: Final answer
    x = 289,544.17

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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.