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Finding the Fourth Proportional to 420,524.90, 580,246.74 and 239,226.24

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Solution

The fourth proportional to 420,524.90, 580,246.74 and 239,226.24 is: 330,088.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,524.90 : 580,246.74 = 239,226.24 : x
  2. Step 2: Convert to fraction form
    420,524.90/580,246.74 = 239,226.24/x
  3. Step 3: Cross multiply
    420,524.90x = 580,246.74 × 239,226.24
  4. Step 4: Simplify right side
    420,524.90x = 138,810,248,058.38
  5. Step 5: Solve for x
    x = 138,810,248,058.38/420,524.90
  6. Step 6: Final answer
    x = 330,088.06

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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.