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Finding the Fourth Proportional to 341,886.90, 512,552.88 and 142,356.56

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Solution

The fourth proportional to 341,886.90, 512,552.88 and 142,356.56 is: 213,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,886.90 : 512,552.88 = 142,356.56 : x
  2. Step 2: Convert to fraction form
    341,886.90/512,552.88 = 142,356.56/x
  3. Step 3: Cross multiply
    341,886.90x = 512,552.88 × 142,356.56
  4. Step 4: Simplify right side
    341,886.90x = 72,965,264,814.89
  5. Step 5: Solve for x
    x = 72,965,264,814.89/341,886.90
  6. Step 6: Final answer
    x = 213,419.31

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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.