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Finding the Fourth Proportional to 239,657.46, 359,486.30 and 81,887.46

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Solution

The fourth proportional to 239,657.46, 359,486.30 and 81,887.46 is: 122,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,657.46 : 359,486.30 = 81,887.46 : x
  2. Step 2: Convert to fraction form
    239,657.46/359,486.30 = 81,887.46/x
  3. Step 3: Cross multiply
    239,657.46x = 359,486.30 × 81,887.46
  4. Step 4: Simplify right side
    239,657.46x = 29,437,420,011.80
  5. Step 5: Solve for x
    x = 29,437,420,011.80/239,657.46
  6. Step 6: Final answer
    x = 122,831.23

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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.