Home / 221,621.10-307,901.87-218,963.89

Finding the Fourth Proportional to 221,621.10, 307,901.87 and 218,963.89

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Solution

The fourth proportional to 221,621.10, 307,901.87 and 218,963.89 is: 304,210.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,621.10 : 307,901.87 = 218,963.89 : x
  2. Step 2: Convert to fraction form
    221,621.10/307,901.87 = 218,963.89/x
  3. Step 3: Cross multiply
    221,621.10x = 307,901.87 × 218,963.89
  4. Step 4: Simplify right side
    221,621.10x = 67,419,391,193.47
  5. Step 5: Solve for x
    x = 67,419,391,193.47/221,621.10
  6. Step 6: Final answer
    x = 304,210.16

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.