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Finding the Fourth Proportional to 239,712.40, 359,482.20 and 121,344.40

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Solution

The fourth proportional to 239,712.40, 359,482.20 and 121,344.40 is: 181,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,712.40 : 359,482.20 = 121,344.40 : x
  2. Step 2: Convert to fraction form
    239,712.40/359,482.20 = 121,344.40/x
  3. Step 3: Cross multiply
    239,712.40x = 359,482.20 × 121,344.40
  4. Step 4: Simplify right side
    239,712.40x = 43,621,151,869.68
  5. Step 5: Solve for x
    x = 43,621,151,869.68/239,712.40
  6. Step 6: Final answer
    x = 181,972.86

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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.