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Finding the Fourth Proportional to 316,624.15, 436,928.20 and 173,381.73

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Solution

The fourth proportional to 316,624.15, 436,928.20 and 173,381.73 is: 239,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,624.15 : 436,928.20 = 173,381.73 : x
  2. Step 2: Convert to fraction form
    316,624.15/436,928.20 = 173,381.73/x
  3. Step 3: Cross multiply
    316,624.15x = 436,928.20 × 173,381.73
  4. Step 4: Simplify right side
    316,624.15x = 75,755,367,201.79
  5. Step 5: Solve for x
    x = 75,755,367,201.79/316,624.15
  6. Step 6: Final answer
    x = 239,259.60

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1.5x scale

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.