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Finding the Fourth Proportional to 155,978.40, 234,025.20 and 150,218.40

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Solution

The fourth proportional to 155,978.40, 234,025.20 and 150,218.40 is: 225,383.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,978.40 : 234,025.20 = 150,218.40 : x
  2. Step 2: Convert to fraction form
    155,978.40/234,025.20 = 150,218.40/x
  3. Step 3: Cross multiply
    155,978.40x = 234,025.20 × 150,218.40
  4. Step 4: Simplify right side
    155,978.40x = 35,154,891,103.68
  5. Step 5: Solve for x
    x = 35,154,891,103.68/155,978.40
  6. Step 6: Final answer
    x = 225,383.07

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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.