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Finding the Fourth Proportional to 288,818.88, 398,691.36 and 175,680.96

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Solution

The fourth proportional to 288,818.88, 398,691.36 and 175,680.96 is: 242,513.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,818.88 : 398,691.36 = 175,680.96 : x
  2. Step 2: Convert to fraction form
    288,818.88/398,691.36 = 175,680.96/x
  3. Step 3: Cross multiply
    288,818.88x = 398,691.36 × 175,680.96
  4. Step 4: Simplify right side
    288,818.88x = 70,042,480,868.51
  5. Step 5: Solve for x
    x = 70,042,480,868.51/288,818.88
  6. Step 6: Final answer
    x = 242,513.51

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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.