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Finding the Fourth Proportional to 209,856.80, 314,785.20 and 62,112.80

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Solution

The fourth proportional to 209,856.80, 314,785.20 and 62,112.80 is: 93,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,856.80 : 314,785.20 = 62,112.80 : x
  2. Step 2: Convert to fraction form
    209,856.80/314,785.20 = 62,112.80/x
  3. Step 3: Cross multiply
    209,856.80x = 314,785.20 × 62,112.80
  4. Step 4: Simplify right side
    209,856.80x = 19,552,190,170.56
  5. Step 5: Solve for x
    x = 19,552,190,170.56/209,856.80
  6. Step 6: Final answer
    x = 93,169.20

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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.