Home / 271,780.47-407,785.89-145,387.62

Finding the Fourth Proportional to 271,780.47, 407,785.89 and 145,387.62

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Solution

The fourth proportional to 271,780.47, 407,785.89 and 145,387.62 is: 218,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,780.47 : 407,785.89 = 145,387.62 : x
  2. Step 2: Convert to fraction form
    271,780.47/407,785.89 = 145,387.62/x
  3. Step 3: Cross multiply
    271,780.47x = 407,785.89 × 145,387.62
  4. Step 4: Simplify right side
    271,780.47x = 59,287,020,016.68
  5. Step 5: Solve for x
    x = 59,287,020,016.68/271,780.47
  6. Step 6: Final answer
    x = 218,143.05

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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.