Home / 399,726.77-551,630.15-218,446.34

Finding the Fourth Proportional to 399,726.77, 551,630.15 and 218,446.34

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Solution

The fourth proportional to 399,726.77, 551,630.15 and 218,446.34 is: 301,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,726.77 : 551,630.15 = 218,446.34 : x
  2. Step 2: Convert to fraction form
    399,726.77/551,630.15 = 218,446.34/x
  3. Step 3: Cross multiply
    399,726.77x = 551,630.15 × 218,446.34
  4. Step 4: Simplify right side
    399,726.77x = 120,501,583,450.77
  5. Step 5: Solve for x
    x = 120,501,583,450.77/399,726.77
  6. Step 6: Final answer
    x = 301,459.88

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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.