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Finding the Fourth Proportional to 345,034.80, 517,568.40 and 108,385.20

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Solution

The fourth proportional to 345,034.80, 517,568.40 and 108,385.20 is: 162,582.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,034.80 : 517,568.40 = 108,385.20 : x
  2. Step 2: Convert to fraction form
    345,034.80/517,568.40 = 108,385.20/x
  3. Step 3: Cross multiply
    345,034.80x = 517,568.40 × 108,385.20
  4. Step 4: Simplify right side
    345,034.80x = 56,096,754,547.68
  5. Step 5: Solve for x
    x = 56,096,754,547.68/345,034.80
  6. Step 6: Final answer
    x = 162,582.89

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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.