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Finding the Fourth Proportional to 275,307.60, 412,864.20 and 97,820.40

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Solution

The fourth proportional to 275,307.60, 412,864.20 and 97,820.40 is: 146,696.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,307.60 : 412,864.20 = 97,820.40 : x
  2. Step 2: Convert to fraction form
    275,307.60/412,864.20 = 97,820.40/x
  3. Step 3: Cross multiply
    275,307.60x = 412,864.20 × 97,820.40
  4. Step 4: Simplify right side
    275,307.60x = 40,386,541,189.68
  5. Step 5: Solve for x
    x = 40,386,541,189.68/275,307.60
  6. Step 6: Final answer
    x = 146,696.06

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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.