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Finding the Fourth Proportional to 388,052.20, 581,377.80 and 163,009.90

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Solution

The fourth proportional to 388,052.20, 581,377.80 and 163,009.90 is: 244,220.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,052.20 : 581,377.80 = 163,009.90 : x
  2. Step 2: Convert to fraction form
    388,052.20/581,377.80 = 163,009.90/x
  3. Step 3: Cross multiply
    388,052.20x = 581,377.80 × 163,009.90
  4. Step 4: Simplify right side
    388,052.20x = 94,770,337,040.22
  5. Step 5: Solve for x
    x = 94,770,337,040.22/388,052.20
  6. Step 6: Final answer
    x = 244,220.59

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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.