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Finding the Fourth Proportional to 155,512.80, 232,831.80 and 139,766.40

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Solution

The fourth proportional to 155,512.80, 232,831.80 and 139,766.40 is: 209,256.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,512.80 : 232,831.80 = 139,766.40 : x
  2. Step 2: Convert to fraction form
    155,512.80/232,831.80 = 139,766.40/x
  3. Step 3: Cross multiply
    155,512.80x = 232,831.80 × 139,766.40
  4. Step 4: Simplify right side
    155,512.80x = 32,542,062,491.52
  5. Step 5: Solve for x
    x = 32,542,062,491.52/155,512.80
  6. Step 6: Final answer
    x = 209,256.49

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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.