Home / 432,831.10-649,316.40-133,311.58

Finding the Fourth Proportional to 432,831.10, 649,316.40 and 133,311.58

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Solution

The fourth proportional to 432,831.10, 649,316.40 and 133,311.58 is: 199,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,831.10 : 649,316.40 = 133,311.58 : x
  2. Step 2: Convert to fraction form
    432,831.10/649,316.40 = 133,311.58/x
  3. Step 3: Cross multiply
    432,831.10x = 649,316.40 × 133,311.58
  4. Step 4: Simplify right side
    432,831.10x = 86,561,395,203.91
  5. Step 5: Solve for x
    x = 86,561,395,203.91/432,831.10
  6. Step 6: Final answer
    x = 199,988.85

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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.