Home / 345,680.70-518,434.65-132,402.30

Finding the Fourth Proportional to 345,680.70, 518,434.65 and 132,402.30

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Solution

The fourth proportional to 345,680.70, 518,434.65 and 132,402.30 is: 198,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,680.70 : 518,434.65 = 132,402.30 : x
  2. Step 2: Convert to fraction form
    345,680.70/518,434.65 = 132,402.30/x
  3. Step 3: Cross multiply
    345,680.70x = 518,434.65 × 132,402.30
  4. Step 4: Simplify right side
    345,680.70x = 68,641,940,059.70
  5. Step 5: Solve for x
    x = 68,641,940,059.70/345,680.70
  6. Step 6: Final answer
    x = 198,570.36

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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.