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Finding the Fourth Proportional to 312,391.49, 468,587.23 and 75,734.16

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Solution

The fourth proportional to 312,391.49, 468,587.23 and 75,734.16 is: 113,601.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,391.49 : 468,587.23 = 75,734.16 : x
  2. Step 2: Convert to fraction form
    312,391.49/468,587.23 = 75,734.16/x
  3. Step 3: Cross multiply
    312,391.49x = 468,587.23 × 75,734.16
  4. Step 4: Simplify right side
    312,391.49x = 35,488,058,304.24
  5. Step 5: Solve for x
    x = 35,488,058,304.24/312,391.49
  6. Step 6: Final answer
    x = 113,601.23

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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.