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Finding the Fourth Proportional to 385,535.52, 578,159.64 and 132,745.32

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Solution

The fourth proportional to 385,535.52, 578,159.64 and 132,745.32 is: 199,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,535.52 : 578,159.64 = 132,745.32 : x
  2. Step 2: Convert to fraction form
    385,535.52/578,159.64 = 132,745.32/x
  3. Step 3: Cross multiply
    385,535.52x = 578,159.64 × 132,745.32
  4. Step 4: Simplify right side
    385,535.52x = 76,747,986,422.88
  5. Step 5: Solve for x
    x = 76,747,986,422.88/385,535.52
  6. Step 6: Final answer
    x = 199,068.52

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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.