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Finding the Fourth Proportional to 245,836,387.30, 368,754,580.95 and 123,392,380.90

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Solution

The fourth proportional to 245,836,387.30, 368,754,580.95 and 123,392,380.90 is: 185,088,571.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,836,387.30 : 368,754,580.95 = 123,392,380.90 : x
  2. Step 2: Convert to fraction form
    245,836,387.30/368,754,580.95 = 123,392,380.90/x
  3. Step 3: Cross multiply
    245,836,387.30x = 368,754,580.95 × 123,392,380.90
  4. Step 4: Simplify right side
    245,836,387.30x = 45,501,505,711,202,288
  5. Step 5: Solve for x
    x = 45,501,505,711,202,288/245,836,387.30
  6. Step 6: Final answer
    x = 185,088,571.35

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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.