Home / 387,405.04-581,163-187,561.36

Finding the Fourth Proportional to 387,405.04, 581,163 and 187,561.36

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Solution

The fourth proportional to 387,405.04, 581,163 and 187,561.36 is: 281,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,405.04 : 581,163 = 187,561.36 : x
  2. Step 2: Convert to fraction form
    387,405.04/581,163 = 187,561.36/x
  3. Step 3: Cross multiply
    387,405.04x = 581,163 × 187,561.36
  4. Step 4: Simplify right side
    387,405.04x = 109,003,722,661.68
  5. Step 5: Solve for x
    x = 109,003,722,661.68/387,405.04
  6. Step 6: Final answer
    x = 281,368.88

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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.