Home / 284,020.78-391,949.94-156,700.12

Finding the Fourth Proportional to 284,020.78, 391,949.94 and 156,700.12

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Solution

The fourth proportional to 284,020.78, 391,949.94 and 156,700.12 is: 216,246.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,020.78 : 391,949.94 = 156,700.12 : x
  2. Step 2: Convert to fraction form
    284,020.78/391,949.94 = 156,700.12/x
  3. Step 3: Cross multiply
    284,020.78x = 391,949.94 × 156,700.12
  4. Step 4: Simplify right side
    284,020.78x = 61,418,602,631.99
  5. Step 5: Solve for x
    x = 61,418,602,631.99/284,020.78
  6. Step 6: Final answer
    x = 216,246.86

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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.