Home / 399,986.52-551,981.70-218,695.56

Finding the Fourth Proportional to 399,986.52, 551,981.70 and 218,695.56

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Solution

The fourth proportional to 399,986.52, 551,981.70 and 218,695.56 is: 301,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,986.52 : 551,981.70 = 218,695.56 : x
  2. Step 2: Convert to fraction form
    399,986.52/551,981.70 = 218,695.56/x
  3. Step 3: Cross multiply
    399,986.52x = 551,981.70 × 218,695.56
  4. Step 4: Simplify right side
    399,986.52x = 120,715,946,991.25
  5. Step 5: Solve for x
    x = 120,715,946,991.25/399,986.52
  6. Step 6: Final answer
    x = 301,800.04

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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.