Home / 309,237.28-423,549.92-291,080.32

Finding the Fourth Proportional to 309,237.28, 423,549.92 and 291,080.32

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Solution

The fourth proportional to 309,237.28, 423,549.92 and 291,080.32 is: 398,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,237.28 : 423,549.92 = 291,080.32 : x
  2. Step 2: Convert to fraction form
    309,237.28/423,549.92 = 291,080.32/x
  3. Step 3: Cross multiply
    309,237.28x = 423,549.92 × 291,080.32
  4. Step 4: Simplify right side
    309,237.28x = 123,287,046,249.57
  5. Step 5: Solve for x
    x = 123,287,046,249.57/309,237.28
  6. Step 6: Final answer
    x = 398,681.06

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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.