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Finding the Fourth Proportional to 399,313.10, 598,969.65 and 133,082.30

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Solution

The fourth proportional to 399,313.10, 598,969.65 and 133,082.30 is: 199,623.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,313.10 : 598,969.65 = 133,082.30 : x
  2. Step 2: Convert to fraction form
    399,313.10/598,969.65 = 133,082.30/x
  3. Step 3: Cross multiply
    399,313.10x = 598,969.65 × 133,082.30
  4. Step 4: Simplify right side
    399,313.10x = 79,712,258,652.20
  5. Step 5: Solve for x
    x = 79,712,258,652.20/399,313.10
  6. Step 6: Final answer
    x = 199,623.45

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Similar ratio
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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.