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Finding the Fourth Proportional to 312,362.85, 468,540.12 and 75,707.58

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Solution

The fourth proportional to 312,362.85, 468,540.12 and 75,707.58 is: 113,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,362.85 : 468,540.12 = 75,707.58 : x
  2. Step 2: Convert to fraction form
    312,362.85/468,540.12 = 75,707.58/x
  3. Step 3: Cross multiply
    312,362.85x = 468,540.12 × 75,707.58
  4. Step 4: Simplify right side
    312,362.85x = 35,472,038,618.11
  5. Step 5: Solve for x
    x = 35,472,038,618.11/312,362.85
  6. Step 6: Final answer
    x = 113,560.36

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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.