Home / 420,347.16-580,091.87-239,085.18

Finding the Fourth Proportional to 420,347.16, 580,091.87 and 239,085.18

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Solution

The fourth proportional to 420,347.16, 580,091.87 and 239,085.18 is: 329,944.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,347.16 : 580,091.87 = 239,085.18 : x
  2. Step 2: Convert to fraction form
    420,347.16/580,091.87 = 239,085.18/x
  3. Step 3: Cross multiply
    420,347.16x = 580,091.87 × 239,085.18
  4. Step 4: Simplify right side
    420,347.16x = 138,691,369,753.20
  5. Step 5: Solve for x
    x = 138,691,369,753.20/420,347.16
  6. Step 6: Final answer
    x = 329,944.82

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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.