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Finding the Fourth Proportional to 398,757.13, 598,033.63 and 118,208.77

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Solution

The fourth proportional to 398,757.13, 598,033.63 and 118,208.77 is: 177,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,757.13 : 598,033.63 = 118,208.77 : x
  2. Step 2: Convert to fraction form
    398,757.13/598,033.63 = 118,208.77/x
  3. Step 3: Cross multiply
    398,757.13x = 598,033.63 × 118,208.77
  4. Step 4: Simplify right side
    398,757.13x = 70,692,818,473.61
  5. Step 5: Solve for x
    x = 70,692,818,473.61/398,757.13
  6. Step 6: Final answer
    x = 177,282.90

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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.