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Finding the Fourth Proportional to 284,049.94, 391,988.60 and 156,725.52

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Solution

The fourth proportional to 284,049.94, 391,988.60 and 156,725.52 is: 216,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,049.94 : 391,988.60 = 156,725.52 : x
  2. Step 2: Convert to fraction form
    284,049.94/391,988.60 = 156,725.52/x
  3. Step 3: Cross multiply
    284,049.94x = 391,988.60 × 156,725.52
  4. Step 4: Simplify right side
    284,049.94x = 61,434,617,169.07
  5. Step 5: Solve for x
    x = 61,434,617,169.07/284,049.94
  6. Step 6: Final answer
    x = 216,281.04

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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.