Home / 216,831.40-325,247.10-138,002.20

Finding the Fourth Proportional to 216,831.40, 325,247.10 and 138,002.20

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Solution

The fourth proportional to 216,831.40, 325,247.10 and 138,002.20 is: 207,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,831.40 : 325,247.10 = 138,002.20 : x
  2. Step 2: Convert to fraction form
    216,831.40/325,247.10 = 138,002.20/x
  3. Step 3: Cross multiply
    216,831.40x = 325,247.10 × 138,002.20
  4. Step 4: Simplify right side
    216,831.40x = 44,884,815,343.62
  5. Step 5: Solve for x
    x = 44,884,815,343.62/216,831.40
  6. Step 6: Final answer
    x = 207,003.30

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1.5x scale

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.