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Finding the Fourth Proportional to 209,552.80, 314,329.20 and 84,893.80

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Solution

The fourth proportional to 209,552.80, 314,329.20 and 84,893.80 is: 127,340.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,552.80 : 314,329.20 = 84,893.80 : x
  2. Step 2: Convert to fraction form
    209,552.80/314,329.20 = 84,893.80/x
  3. Step 3: Cross multiply
    209,552.80x = 314,329.20 × 84,893.80
  4. Step 4: Simplify right side
    209,552.80x = 26,684,600,238.96
  5. Step 5: Solve for x
    x = 26,684,600,238.96/209,552.80
  6. Step 6: Final answer
    x = 127,340.70

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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.