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Finding the Fourth Proportional to 399,077.64, 598,601.88 and 118,587.60

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Solution

The fourth proportional to 399,077.64, 598,601.88 and 118,587.60 is: 177,877.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,077.64 : 598,601.88 = 118,587.60 : x
  2. Step 2: Convert to fraction form
    399,077.64/598,601.88 = 118,587.60/x
  3. Step 3: Cross multiply
    399,077.64x = 598,601.88 × 118,587.60
  4. Step 4: Simplify right side
    399,077.64x = 70,986,760,304.69
  5. Step 5: Solve for x
    x = 70,986,760,304.69/399,077.64
  6. Step 6: Final answer
    x = 177,877.07

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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.