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Finding the Fourth Proportional to 150,298.50, 207,418.45 and 83,230.50

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Solution

The fourth proportional to 150,298.50, 207,418.45 and 83,230.50 is: 114,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,298.50 : 207,418.45 = 83,230.50 : x
  2. Step 2: Convert to fraction form
    150,298.50/207,418.45 = 83,230.50/x
  3. Step 3: Cross multiply
    150,298.50x = 207,418.45 × 83,230.50
  4. Step 4: Simplify right side
    150,298.50x = 17,263,541,302.73
  5. Step 5: Solve for x
    x = 17,263,541,302.73/150,298.50
  6. Step 6: Final answer
    x = 114,861.70

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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.