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Finding the Fourth Proportional to 312,245.42, 468,369.33 and 75,587.72

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Solution

The fourth proportional to 312,245.42, 468,369.33 and 75,587.72 is: 113,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,245.42 : 468,369.33 = 75,587.72 : x
  2. Step 2: Convert to fraction form
    312,245.42/468,369.33 = 75,587.72/x
  3. Step 3: Cross multiply
    312,245.42x = 468,369.33 × 75,587.72
  4. Step 4: Simplify right side
    312,245.42x = 35,402,969,772.63
  5. Step 5: Solve for x
    x = 35,402,969,772.63/312,245.42
  6. Step 6: Final answer
    x = 113,381.87

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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.