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Finding the Fourth Proportional to 343,170.36, 514,612.98 and 132,687

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Solution

The fourth proportional to 343,170.36, 514,612.98 and 132,687 is: 198,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,170.36 : 514,612.98 = 132,687 : x
  2. Step 2: Convert to fraction form
    343,170.36/514,612.98 = 132,687/x
  3. Step 3: Cross multiply
    343,170.36x = 514,612.98 × 132,687
  4. Step 4: Simplify right side
    343,170.36x = 68,282,452,477.26
  5. Step 5: Solve for x
    x = 68,282,452,477.26/343,170.36
  6. Step 6: Final answer
    x = 198,975.38

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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.