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Finding the Fourth Proportional to 312,656.48, 468,980.60 and 75,998.48

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Solution

The fourth proportional to 312,656.48, 468,980.60 and 75,998.48 is: 113,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,656.48 : 468,980.60 = 75,998.48 : x
  2. Step 2: Convert to fraction form
    312,656.48/468,980.60 = 75,998.48/x
  3. Step 3: Cross multiply
    312,656.48x = 468,980.60 × 75,998.48
  4. Step 4: Simplify right side
    312,656.48x = 35,641,812,749.49
  5. Step 5: Solve for x
    x = 35,641,812,749.49/312,656.48
  6. Step 6: Final answer
    x = 113,996.72

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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.