Home / 420,600.20-580,437.06-229,621.64

Finding the Fourth Proportional to 420,600.20, 580,437.06 and 229,621.64

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Solution

The fourth proportional to 420,600.20, 580,437.06 and 229,621.64 is: 316,882.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,600.20 : 580,437.06 = 229,621.64 : x
  2. Step 2: Convert to fraction form
    420,600.20/580,437.06 = 229,621.64/x
  3. Step 3: Cross multiply
    420,600.20x = 580,437.06 × 229,621.64
  4. Step 4: Simplify right side
    420,600.20x = 133,280,909,633.98
  5. Step 5: Solve for x
    x = 133,280,909,633.98/420,600.20
  6. Step 6: Final answer
    x = 316,882.66

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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.