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Finding the Fourth Proportional to 395,440.49, 592,761.28 and 155,722.61

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Solution

The fourth proportional to 395,440.49, 592,761.28 and 155,722.61 is: 233,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,440.49 : 592,761.28 = 155,722.61 : x
  2. Step 2: Convert to fraction form
    395,440.49/592,761.28 = 155,722.61/x
  3. Step 3: Cross multiply
    395,440.49x = 592,761.28 × 155,722.61
  4. Step 4: Simplify right side
    395,440.49x = 92,306,333,628.54
  5. Step 5: Solve for x
    x = 92,306,333,628.54/395,440.49
  6. Step 6: Final answer
    x = 233,426.61

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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.