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Finding the Fourth Proportional to 341,894.40, 512,936.40 and 142,308.80

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Solution

The fourth proportional to 341,894.40, 512,936.40 and 142,308.80 is: 213,502.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,894.40 : 512,936.40 = 142,308.80 : x
  2. Step 2: Convert to fraction form
    341,894.40/512,936.40 = 142,308.80/x
  3. Step 3: Cross multiply
    341,894.40x = 512,936.40 × 142,308.80
  4. Step 4: Simplify right side
    341,894.40x = 72,995,363,560.32
  5. Step 5: Solve for x
    x = 72,995,363,560.32/341,894.40
  6. Step 6: Final answer
    x = 213,502.66

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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.