Home / 398,640.24-598,061.40-132,402.16

Finding the Fourth Proportional to 398,640.24, 598,061.40 and 132,402.16

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Solution

The fourth proportional to 398,640.24, 598,061.40 and 132,402.16 is: 198,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,640.24 : 598,061.40 = 132,402.16 : x
  2. Step 2: Convert to fraction form
    398,640.24/598,061.40 = 132,402.16/x
  3. Step 3: Cross multiply
    398,640.24x = 598,061.40 × 132,402.16
  4. Step 4: Simplify right side
    398,640.24x = 79,184,621,172.62
  5. Step 5: Solve for x
    x = 79,184,621,172.62/398,640.24
  6. Step 6: Final answer
    x = 198,636.80

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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.