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Finding the Fourth Proportional to 338,793.06, 508,199.84 and 86,073.60

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Solution

The fourth proportional to 338,793.06, 508,199.84 and 86,073.60 is: 129,113.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,793.06 : 508,199.84 = 86,073.60 : x
  2. Step 2: Convert to fraction form
    338,793.06/508,199.84 = 86,073.60/x
  3. Step 3: Cross multiply
    338,793.06x = 508,199.84 × 86,073.60
  4. Step 4: Simplify right side
    338,793.06x = 43,742,589,963.41
  5. Step 5: Solve for x
    x = 43,742,589,963.41/338,793.06
  6. Step 6: Final answer
    x = 129,113.00

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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.