Home / 399,142.91-598,810.05-132,905.84

Finding the Fourth Proportional to 399,142.91, 598,810.05 and 132,905.84

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Solution

The fourth proportional to 399,142.91, 598,810.05 and 132,905.84 is: 199,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,142.91 : 598,810.05 = 132,905.84 : x
  2. Step 2: Convert to fraction form
    399,142.91/598,810.05 = 132,905.84/x
  3. Step 3: Cross multiply
    399,142.91x = 598,810.05 × 132,905.84
  4. Step 4: Simplify right side
    399,142.91x = 79,585,349,701.64
  5. Step 5: Solve for x
    x = 79,585,349,701.64/399,142.91
  6. Step 6: Final answer
    x = 199,390.61

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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.