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Finding the Fourth Proportional to 289,083.70, 433,517.67 and 99,490.90

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Solution

The fourth proportional to 289,083.70, 433,517.67 and 99,490.90 is: 149,199.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,083.70 : 433,517.67 = 99,490.90 : x
  2. Step 2: Convert to fraction form
    289,083.70/433,517.67 = 99,490.90/x
  3. Step 3: Cross multiply
    289,083.70x = 433,517.67 × 99,490.90
  4. Step 4: Simplify right side
    289,083.70x = 43,131,063,154.20
  5. Step 5: Solve for x
    x = 43,131,063,154.20/289,083.70
  6. Step 6: Final answer
    x = 149,199.22

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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.