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Finding the Fourth Proportional to 430,672.22, 645,959.12 and 115,153.73

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Solution

The fourth proportional to 430,672.22, 645,959.12 and 115,153.73 is: 172,717.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,672.22 : 645,959.12 = 115,153.73 : x
  2. Step 2: Convert to fraction form
    430,672.22/645,959.12 = 115,153.73/x
  3. Step 3: Cross multiply
    430,672.22x = 645,959.12 × 115,153.73
  4. Step 4: Simplify right side
    430,672.22x = 74,384,598,289.95
  5. Step 5: Solve for x
    x = 74,384,598,289.95/430,672.22
  6. Step 6: Final answer
    x = 172,717.43

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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.