Home / 420,279.54-580,002.03-239,008.02

Finding the Fourth Proportional to 420,279.54, 580,002.03 and 239,008.02

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Solution

The fourth proportional to 420,279.54, 580,002.03 and 239,008.02 is: 329,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,279.54 : 580,002.03 = 239,008.02 : x
  2. Step 2: Convert to fraction form
    420,279.54/580,002.03 = 239,008.02/x
  3. Step 3: Cross multiply
    420,279.54x = 580,002.03 × 239,008.02
  4. Step 4: Simplify right side
    420,279.54x = 138,625,136,786.28
  5. Step 5: Solve for x
    x = 138,625,136,786.28/420,279.54
  6. Step 6: Final answer
    x = 329,840.32

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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.