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Finding the Fourth Proportional to 205,034.40, 307,522.80 and 64,807.20

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Solution

The fourth proportional to 205,034.40, 307,522.80 and 64,807.20 is: 97,201.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,034.40 : 307,522.80 = 64,807.20 : x
  2. Step 2: Convert to fraction form
    205,034.40/307,522.80 = 64,807.20/x
  3. Step 3: Cross multiply
    205,034.40x = 307,522.80 × 64,807.20
  4. Step 4: Simplify right side
    205,034.40x = 19,929,691,604.16
  5. Step 5: Solve for x
    x = 19,929,691,604.16/205,034.40
  6. Step 6: Final answer
    x = 97,201.70

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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.