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Finding the Fourth Proportional to 341,718.80, 512,578.20 and 141,972.80

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Solution

The fourth proportional to 341,718.80, 512,578.20 and 141,972.80 is: 212,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,718.80 : 512,578.20 = 141,972.80 : x
  2. Step 2: Convert to fraction form
    341,718.80/512,578.20 = 141,972.80/x
  3. Step 3: Cross multiply
    341,718.80x = 512,578.20 × 141,972.80
  4. Step 4: Simplify right side
    341,718.80x = 72,772,162,272.96
  5. Step 5: Solve for x
    x = 72,772,162,272.96/341,718.80
  6. Step 6: Final answer
    x = 212,959.20

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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.