Home / 399,529.04-551,326.15-218,204.87

Finding the Fourth Proportional to 399,529.04, 551,326.15 and 218,204.87

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Solution

The fourth proportional to 399,529.04, 551,326.15 and 218,204.87 is: 301,109.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,529.04 : 551,326.15 = 218,204.87 : x
  2. Step 2: Convert to fraction form
    399,529.04/551,326.15 = 218,204.87/x
  3. Step 3: Cross multiply
    399,529.04x = 551,326.15 × 218,204.87
  4. Step 4: Simplify right side
    399,529.04x = 120,302,051,721.15
  5. Step 5: Solve for x
    x = 120,302,051,721.15/399,529.04
  6. Step 6: Final answer
    x = 301,109.65

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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.