Home / 820,225.20-1,230,402.06-221,177.28

Finding the Fourth Proportional to 820,225.20, 1,230,402.06 and 221,177.28

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Solution

The fourth proportional to 820,225.20, 1,230,402.06 and 221,177.28 is: 331,783.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,225.20 : 1,230,402.06 = 221,177.28 : x
  2. Step 2: Convert to fraction form
    820,225.20/1,230,402.06 = 221,177.28/x
  3. Step 3: Cross multiply
    820,225.20x = 1,230,402.06 × 221,177.28
  4. Step 4: Simplify right side
    820,225.20x = 272,136,980,937.20
  5. Step 5: Solve for x
    x = 272,136,980,937.20/820,225.20
  6. Step 6: Final answer
    x = 331,783.25

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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.