Home / 221,831.04-306,120-126,351.36

Finding the Fourth Proportional to 221,831.04, 306,120 and 126,351.36

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Solution

The fourth proportional to 221,831.04, 306,120 and 126,351.36 is: 174,360.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,831.04 : 306,120 = 126,351.36 : x
  2. Step 2: Convert to fraction form
    221,831.04/306,120 = 126,351.36/x
  3. Step 3: Cross multiply
    221,831.04x = 306,120 × 126,351.36
  4. Step 4: Simplify right side
    221,831.04x = 38,678,678,323.20
  5. Step 5: Solve for x
    x = 38,678,678,323.20/221,831.04
  6. Step 6: Final answer
    x = 174,360.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.