Home / 399,341.13-551,087.98-218,053

Finding the Fourth Proportional to 399,341.13, 551,087.98 and 218,053

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Solution

The fourth proportional to 399,341.13, 551,087.98 and 218,053 is: 300,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,341.13 : 551,087.98 = 218,053 : x
  2. Step 2: Convert to fraction form
    399,341.13/551,087.98 = 218,053/x
  3. Step 3: Cross multiply
    399,341.13x = 551,087.98 × 218,053
  4. Step 4: Simplify right side
    399,341.13x = 120,166,387,302.94
  5. Step 5: Solve for x
    x = 120,166,387,302.94/399,341.13
  6. Step 6: Final answer
    x = 300,911.62

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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.