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Finding the Fourth Proportional to 288,330.76, 397,894.86 and 159,278.11

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Solution

The fourth proportional to 288,330.76, 397,894.86 and 159,278.11 is: 219,802.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,330.76 : 397,894.86 = 159,278.11 : x
  2. Step 2: Convert to fraction form
    288,330.76/397,894.86 = 159,278.11/x
  3. Step 3: Cross multiply
    288,330.76x = 397,894.86 × 159,278.11
  4. Step 4: Simplify right side
    288,330.76x = 63,375,941,279.51
  5. Step 5: Solve for x
    x = 63,375,941,279.51/288,330.76
  6. Step 6: Final answer
    x = 219,802.91

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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.