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Finding the Fourth Proportional to 230,113.90, 344,965.65 and 89,839.90

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Solution

The fourth proportional to 230,113.90, 344,965.65 and 89,839.90 is: 134,679.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,113.90 : 344,965.65 = 89,839.90 : x
  2. Step 2: Convert to fraction form
    230,113.90/344,965.65 = 89,839.90/x
  3. Step 3: Cross multiply
    230,113.90x = 344,965.65 × 89,839.90
  4. Step 4: Simplify right side
    230,113.90x = 30,991,679,499.44
  5. Step 5: Solve for x
    x = 30,991,679,499.44/230,113.90
  6. Step 6: Final answer
    x = 134,679.74

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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.