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Finding the Fourth Proportional to 420,280.54, 580,003.41 and 239,009.02

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Solution

The fourth proportional to 420,280.54, 580,003.41 and 239,009.02 is: 329,841.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,280.54 : 580,003.41 = 239,009.02 : x
  2. Step 2: Convert to fraction form
    420,280.54/580,003.41 = 239,009.02/x
  3. Step 3: Cross multiply
    420,280.54x = 580,003.41 × 239,009.02
  4. Step 4: Simplify right side
    420,280.54x = 138,626,046,620.76
  5. Step 5: Solve for x
    x = 138,626,046,620.76/420,280.54
  6. Step 6: Final answer
    x = 329,841.70

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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.