Home / 387,815.04-581,126.40-229,728.96

Finding the Fourth Proportional to 387,815.04, 581,126.40 and 229,728.96

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Solution

The fourth proportional to 387,815.04, 581,126.40 and 229,728.96 is: 344,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,815.04 : 581,126.40 = 229,728.96 : x
  2. Step 2: Convert to fraction form
    387,815.04/581,126.40 = 229,728.96/x
  3. Step 3: Cross multiply
    387,815.04x = 581,126.40 × 229,728.96
  4. Step 4: Simplify right side
    387,815.04x = 133,501,563,500.54
  5. Step 5: Solve for x
    x = 133,501,563,500.54/387,815.04
  6. Step 6: Final answer
    x = 344,240.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.