Home / 309,239.28-423,552.66-291,082.32

Finding the Fourth Proportional to 309,239.28, 423,552.66 and 291,082.32

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Solution

The fourth proportional to 309,239.28, 423,552.66 and 291,082.32 is: 398,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,239.28 : 423,552.66 = 291,082.32 : x
  2. Step 2: Convert to fraction form
    309,239.28/423,552.66 = 291,082.32/x
  3. Step 3: Cross multiply
    309,239.28x = 423,552.66 × 291,082.32
  4. Step 4: Simplify right side
    309,239.28x = 123,288,690,914.97
  5. Step 5: Solve for x
    x = 123,288,690,914.97/309,239.28
  6. Step 6: Final answer
    x = 398,683.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.