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Finding the Fourth Proportional to 399,811.60, 599,498.70 and 162,886.60

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Solution

The fourth proportional to 399,811.60, 599,498.70 and 162,886.60 is: 244,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,811.60 : 599,498.70 = 162,886.60 : x
  2. Step 2: Convert to fraction form
    399,811.60/599,498.70 = 162,886.60/x
  3. Step 3: Cross multiply
    399,811.60x = 599,498.70 × 162,886.60
  4. Step 4: Simplify right side
    399,811.60x = 97,650,304,947.42
  5. Step 5: Solve for x
    x = 97,650,304,947.42/399,811.60
  6. Step 6: Final answer
    x = 244,240.80

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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.