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Finding the Fourth Proportional to 331,478.80, 497,218.20 and 144,854.80

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Solution

The fourth proportional to 331,478.80, 497,218.20 and 144,854.80 is: 217,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,478.80 : 497,218.20 = 144,854.80 : x
  2. Step 2: Convert to fraction form
    331,478.80/497,218.20 = 144,854.80/x
  3. Step 3: Cross multiply
    331,478.80x = 497,218.20 × 144,854.80
  4. Step 4: Simplify right side
    331,478.80x = 72,024,442,917.36
  5. Step 5: Solve for x
    x = 72,024,442,917.36/331,478.80
  6. Step 6: Final answer
    x = 217,282.20

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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.