Home / 399,930.80-551,921.16-230,165.36

Finding the Fourth Proportional to 399,930.80, 551,921.16 and 230,165.36

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Solution

The fourth proportional to 399,930.80, 551,921.16 and 230,165.36 is: 317,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,930.80 : 551,921.16 = 230,165.36 : x
  2. Step 2: Convert to fraction form
    399,930.80/551,921.16 = 230,165.36/x
  3. Step 3: Cross multiply
    399,930.80x = 551,921.16 × 230,165.36
  4. Step 4: Simplify right side
    399,930.80x = 127,033,132,483.02
  5. Step 5: Solve for x
    x = 127,033,132,483.02/399,930.80
  6. Step 6: Final answer
    x = 317,637.78

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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.