Home / 385,067.90-577,640.45-132,315.10

Finding the Fourth Proportional to 385,067.90, 577,640.45 and 132,315.10

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Solution

The fourth proportional to 385,067.90, 577,640.45 and 132,315.10 is: 198,485.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,067.90 : 577,640.45 = 132,315.10 : x
  2. Step 2: Convert to fraction form
    385,067.90/577,640.45 = 132,315.10/x
  3. Step 3: Cross multiply
    385,067.90x = 577,640.45 × 132,315.10
  4. Step 4: Simplify right side
    385,067.90x = 76,430,553,905.80
  5. Step 5: Solve for x
    x = 76,430,553,905.80/385,067.90
  6. Step 6: Final answer
    x = 198,485.91

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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.