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Finding the Fourth Proportional to 331,458.40, 497,360.40 and 144,488.80

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Solution

The fourth proportional to 331,458.40, 497,360.40 and 144,488.80 is: 216,808.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,458.40 : 497,360.40 = 144,488.80 : x
  2. Step 2: Convert to fraction form
    331,458.40/497,360.40 = 144,488.80/x
  3. Step 3: Cross multiply
    331,458.40x = 497,360.40 × 144,488.80
  4. Step 4: Simplify right side
    331,458.40x = 71,863,007,363.52
  5. Step 5: Solve for x
    x = 71,863,007,363.52/331,458.40
  6. Step 6: Final answer
    x = 216,808.53

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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.