Home / 372,399.32-512,932.08-286,193.36

Finding the Fourth Proportional to 372,399.32, 512,932.08 and 286,193.36

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Solution

The fourth proportional to 372,399.32, 512,932.08 and 286,193.36 is: 394,194.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,399.32 : 512,932.08 = 286,193.36 : x
  2. Step 2: Convert to fraction form
    372,399.32/512,932.08 = 286,193.36/x
  3. Step 3: Cross multiply
    372,399.32x = 512,932.08 × 286,193.36
  4. Step 4: Simplify right side
    372,399.32x = 146,797,755,426.99
  5. Step 5: Solve for x
    x = 146,797,755,426.99/372,399.32
  6. Step 6: Final answer
    x = 394,194.48

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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.