Home / 221,478.48-305,636.04-120,877.20

Finding the Fourth Proportional to 221,478.48, 305,636.04 and 120,877.20

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Solution

The fourth proportional to 221,478.48, 305,636.04 and 120,877.20 is: 166,808.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,478.48 : 305,636.04 = 120,877.20 : x
  2. Step 2: Convert to fraction form
    221,478.48/305,636.04 = 120,877.20/x
  3. Step 3: Cross multiply
    221,478.48x = 305,636.04 × 120,877.20
  4. Step 4: Simplify right side
    221,478.48x = 36,944,428,734.29
  5. Step 5: Solve for x
    x = 36,944,428,734.29/221,478.48
  6. Step 6: Final answer
    x = 166,808.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.