Home / 399,521.05-599,508.78-146,769.06

Finding the Fourth Proportional to 399,521.05, 599,508.78 and 146,769.06

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Solution

The fourth proportional to 399,521.05, 599,508.78 and 146,769.06 is: 220,237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,521.05 : 599,508.78 = 146,769.06 : x
  2. Step 2: Convert to fraction form
    399,521.05/599,508.78 = 146,769.06/x
  3. Step 3: Cross multiply
    399,521.05x = 599,508.78 × 146,769.06
  4. Step 4: Simplify right side
    399,521.05x = 87,989,337,104.80
  5. Step 5: Solve for x
    x = 87,989,337,104.80/399,521.05
  6. Step 6: Final answer
    x = 220,237.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.