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Finding the Fourth Proportional to 288,447.40, 432,671.43 and 75,215.13

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Solution

The fourth proportional to 288,447.40, 432,671.43 and 75,215.13 is: 112,822.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,447.40 : 432,671.43 = 75,215.13 : x
  2. Step 2: Convert to fraction form
    288,447.40/432,671.43 = 75,215.13/x
  3. Step 3: Cross multiply
    288,447.40x = 432,671.43 × 75,215.13
  4. Step 4: Simplify right side
    288,447.40x = 32,543,436,514.27
  5. Step 5: Solve for x
    x = 32,543,436,514.27/288,447.40
  6. Step 6: Final answer
    x = 112,822.78

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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.