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Finding the Fourth Proportional to 248,381.91, 342,582.21 and 157,659.08

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Solution

The fourth proportional to 248,381.91, 342,582.21 and 157,659.08 is: 217,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,381.91 : 342,582.21 = 157,659.08 : x
  2. Step 2: Convert to fraction form
    248,381.91/342,582.21 = 157,659.08/x
  3. Step 3: Cross multiply
    248,381.91x = 342,582.21 × 157,659.08
  4. Step 4: Simplify right side
    248,381.91x = 54,011,194,340.06
  5. Step 5: Solve for x
    x = 54,011,194,340.06/248,381.91
  6. Step 6: Final answer
    x = 217,452.21

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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.