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Finding the Fourth Proportional to 420,545.08, 580,368.54 and 250,775.56

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Solution

The fourth proportional to 420,545.08, 580,368.54 and 250,775.56 is: 346,080.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,545.08 : 580,368.54 = 250,775.56 : x
  2. Step 2: Convert to fraction form
    420,545.08/580,368.54 = 250,775.56/x
  3. Step 3: Cross multiply
    420,545.08x = 580,368.54 × 250,775.56
  4. Step 4: Simplify right side
    420,545.08x = 145,542,245,624.88
  5. Step 5: Solve for x
    x = 145,542,245,624.88/420,545.08
  6. Step 6: Final answer
    x = 346,080.01

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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.