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Finding the Fourth Proportional to 347,149.76, 521,020.50 and 136,935.32

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Solution

The fourth proportional to 347,149.76, 521,020.50 and 136,935.32 is: 205,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,149.76 : 521,020.50 = 136,935.32 : x
  2. Step 2: Convert to fraction form
    347,149.76/521,020.50 = 136,935.32/x
  3. Step 3: Cross multiply
    347,149.76x = 521,020.50 × 136,935.32
  4. Step 4: Simplify right side
    347,149.76x = 71,346,108,894.06
  5. Step 5: Solve for x
    x = 71,346,108,894.06/347,149.76
  6. Step 6: Final answer
    x = 205,519.68

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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.