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Finding the Fourth Proportional to 359,652.15, 496,015.25 and 216,385.43

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Solution

The fourth proportional to 359,652.15, 496,015.25 and 216,385.43 is: 298,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,652.15 : 496,015.25 = 216,385.43 : x
  2. Step 2: Convert to fraction form
    359,652.15/496,015.25 = 216,385.43/x
  3. Step 3: Cross multiply
    359,652.15x = 496,015.25 × 216,385.43
  4. Step 4: Simplify right side
    359,652.15x = 107,330,469,595.80
  5. Step 5: Solve for x
    x = 107,330,469,595.80/359,652.15
  6. Step 6: Final answer
    x = 298,428.55

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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.