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Finding the Fourth Proportional to 408,204.15, 612,308.18 and 123,897.17

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Solution

The fourth proportional to 408,204.15, 612,308.18 and 123,897.17 is: 185,846.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,204.15 : 612,308.18 = 123,897.17 : x
  2. Step 2: Convert to fraction form
    408,204.15/612,308.18 = 123,897.17/x
  3. Step 3: Cross multiply
    408,204.15x = 612,308.18 × 123,897.17
  4. Step 4: Simplify right side
    408,204.15x = 75,863,246,988.82
  5. Step 5: Solve for x
    x = 75,863,246,988.82/408,204.15
  6. Step 6: Final answer
    x = 185,846.34

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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.