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Finding the Fourth Proportional to 251,402.50, 346,942.02 and 136,688.86

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Solution

The fourth proportional to 251,402.50, 346,942.02 and 136,688.86 is: 188,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,402.50 : 346,942.02 = 136,688.86 : x
  2. Step 2: Convert to fraction form
    251,402.50/346,942.02 = 136,688.86/x
  3. Step 3: Cross multiply
    251,402.50x = 346,942.02 × 136,688.86
  4. Step 4: Simplify right side
    251,402.50x = 47,423,109,199.90
  5. Step 5: Solve for x
    x = 47,423,109,199.90/251,402.50
  6. Step 6: Final answer
    x = 188,634.20

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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.