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Finding the Fourth Proportional to 388,888.68, 583,394.22 and 136,246.44

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Solution

The fourth proportional to 388,888.68, 583,394.22 and 136,246.44 is: 204,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,888.68 : 583,394.22 = 136,246.44 : x
  2. Step 2: Convert to fraction form
    388,888.68/583,394.22 = 136,246.44/x
  3. Step 3: Cross multiply
    388,888.68x = 583,394.22 × 136,246.44
  4. Step 4: Simplify right side
    388,888.68x = 79,485,385,591.58
  5. Step 5: Solve for x
    x = 79,485,385,591.58/388,888.68
  6. Step 6: Final answer
    x = 204,391.10

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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.