Home / 430,451.20-645,446.40-180,851.20

Finding the Fourth Proportional to 430,451.20, 645,446.40 and 180,851.20

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Solution

The fourth proportional to 430,451.20, 645,446.40 and 180,851.20 is: 271,180.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,451.20 : 645,446.40 = 180,851.20 : x
  2. Step 2: Convert to fraction form
    430,451.20/645,446.40 = 180,851.20/x
  3. Step 3: Cross multiply
    430,451.20x = 645,446.40 × 180,851.20
  4. Step 4: Simplify right side
    430,451.20x = 116,729,755,975.68
  5. Step 5: Solve for x
    x = 116,729,755,975.68/430,451.20
  6. Step 6: Final answer
    x = 271,180.00

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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.