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Finding the Fourth Proportional to 387,077.69, 580,806.75 and 173,996.15

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Solution

The fourth proportional to 387,077.69, 580,806.75 and 173,996.15 is: 261,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,077.69 : 580,806.75 = 173,996.15 : x
  2. Step 2: Convert to fraction form
    387,077.69/580,806.75 = 173,996.15/x
  3. Step 3: Cross multiply
    387,077.69x = 580,806.75 × 173,996.15
  4. Step 4: Simplify right side
    387,077.69x = 101,058,139,409.50
  5. Step 5: Solve for x
    x = 101,058,139,409.50/387,077.69
  6. Step 6: Final answer
    x = 261,079.73

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1.5x scale

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.