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Finding the Fourth Proportional to 312,287.99, 468,430.41 and 75,630.66

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Solution

The fourth proportional to 312,287.99, 468,430.41 and 75,630.66 is: 113,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,287.99 : 468,430.41 = 75,630.66 : x
  2. Step 2: Convert to fraction form
    312,287.99/468,430.41 = 75,630.66/x
  3. Step 3: Cross multiply
    312,287.99x = 468,430.41 × 75,630.66
  4. Step 4: Simplify right side
    312,287.99x = 35,427,701,072.37
  5. Step 5: Solve for x
    x = 35,427,701,072.37/312,287.99
  6. Step 6: Final answer
    x = 113,445.61

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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.