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Finding the Fourth Proportional to 248,321.88, 342,579.66 and 156,278.12

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Solution

The fourth proportional to 248,321.88, 342,579.66 and 156,278.12 is: 215,598.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,321.88 : 342,579.66 = 156,278.12 : x
  2. Step 2: Convert to fraction form
    248,321.88/342,579.66 = 156,278.12/x
  3. Step 3: Cross multiply
    248,321.88x = 342,579.66 × 156,278.12
  4. Step 4: Simplify right side
    248,321.88x = 53,537,705,215.04
  5. Step 5: Solve for x
    x = 53,537,705,215.04/248,321.88
  6. Step 6: Final answer
    x = 215,598.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.