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Finding the Fourth Proportional to 343,530.77, 515,054.70 and 151,313.97

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Solution

The fourth proportional to 343,530.77, 515,054.70 and 151,313.97 is: 226,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,530.77 : 515,054.70 = 151,313.97 : x
  2. Step 2: Convert to fraction form
    343,530.77/515,054.70 = 151,313.97/x
  3. Step 3: Cross multiply
    343,530.77x = 515,054.70 × 151,313.97
  4. Step 4: Simplify right side
    343,530.77x = 77,934,972,711.80
  5. Step 5: Solve for x
    x = 77,934,972,711.80/343,530.77
  6. Step 6: Final answer
    x = 226,864.61

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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.