Home / 387,723.72-581,678.52-187,810.45

Finding the Fourth Proportional to 387,723.72, 581,678.52 and 187,810.45

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Solution

The fourth proportional to 387,723.72, 581,678.52 and 187,810.45 is: 281,760.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,723.72 : 581,678.52 = 187,810.45 : x
  2. Step 2: Convert to fraction form
    387,723.72/581,678.52 = 187,810.45/x
  3. Step 3: Cross multiply
    387,723.72x = 581,678.52 × 187,810.45
  4. Step 4: Simplify right side
    387,723.72x = 109,245,304,596.53
  5. Step 5: Solve for x
    x = 109,245,304,596.53/387,723.72
  6. Step 6: Final answer
    x = 281,760.69

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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.