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Finding the Fourth Proportional to 312,015.78, 468,024.69 and 87,377.39

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Solution

The fourth proportional to 312,015.78, 468,024.69 and 87,377.39 is: 131,066.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,015.78 : 468,024.69 = 87,377.39 : x
  2. Step 2: Convert to fraction form
    312,015.78/468,024.69 = 87,377.39/x
  3. Step 3: Cross multiply
    312,015.78x = 468,024.69 × 87,377.39
  4. Step 4: Simplify right side
    312,015.78x = 40,894,773,527.64
  5. Step 5: Solve for x
    x = 40,894,773,527.64/312,015.78
  6. Step 6: Final answer
    x = 131,066.36

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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.