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Finding the Fourth Proportional to 288,094.60, 431,121.30 and 251,061.40

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Solution

The fourth proportional to 288,094.60, 431,121.30 and 251,061.40 is: 375,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,094.60 : 431,121.30 = 251,061.40 : x
  2. Step 2: Convert to fraction form
    288,094.60/431,121.30 = 251,061.40/x
  3. Step 3: Cross multiply
    288,094.60x = 431,121.30 × 251,061.40
  4. Step 4: Simplify right side
    288,094.60x = 108,237,917,147.82
  5. Step 5: Solve for x
    x = 108,237,917,147.82/288,094.60
  6. Step 6: Final answer
    x = 375,702.69

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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.