Home / 399,320.04-551,057.43-218,031.39

Finding the Fourth Proportional to 399,320.04, 551,057.43 and 218,031.39

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Solution

The fourth proportional to 399,320.04, 551,057.43 and 218,031.39 is: 300,881.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,320.04 : 551,057.43 = 218,031.39 : x
  2. Step 2: Convert to fraction form
    399,320.04/551,057.43 = 218,031.39/x
  3. Step 3: Cross multiply
    399,320.04x = 551,057.43 × 218,031.39
  4. Step 4: Simplify right side
    399,320.04x = 120,147,817,432.73
  5. Step 5: Solve for x
    x = 120,147,817,432.73/399,320.04
  6. Step 6: Final answer
    x = 300,881.01

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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.