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Finding the Fourth Proportional to 251,381.78, 346,981.64 and 144,023.30

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Solution

The fourth proportional to 251,381.78, 346,981.64 and 144,023.30 is: 198,794.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,381.78 : 346,981.64 = 144,023.30 : x
  2. Step 2: Convert to fraction form
    251,381.78/346,981.64 = 144,023.30/x
  3. Step 3: Cross multiply
    251,381.78x = 346,981.64 × 144,023.30
  4. Step 4: Simplify right side
    251,381.78x = 49,973,438,377.19
  5. Step 5: Solve for x
    x = 49,973,438,377.19/251,381.78
  6. Step 6: Final answer
    x = 198,794.99

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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.