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Finding the Fourth Proportional to 284,461.20, 426,691.80 and 144,493.20

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Solution

The fourth proportional to 284,461.20, 426,691.80 and 144,493.20 is: 216,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,461.20 : 426,691.80 = 144,493.20 : x
  2. Step 2: Convert to fraction form
    284,461.20/426,691.80 = 144,493.20/x
  3. Step 3: Cross multiply
    284,461.20x = 426,691.80 × 144,493.20
  4. Step 4: Simplify right side
    284,461.20x = 61,654,063,595.76
  5. Step 5: Solve for x
    x = 61,654,063,595.76/284,461.20
  6. Step 6: Final answer
    x = 216,739.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.