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Finding the Fourth Proportional to 312,220.12, 468,330.20 and 75,562.84

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Solution

The fourth proportional to 312,220.12, 468,330.20 and 75,562.84 is: 113,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,220.12 : 468,330.20 = 75,562.84 : x
  2. Step 2: Convert to fraction form
    312,220.12/468,330.20 = 75,562.84/x
  3. Step 3: Cross multiply
    312,220.12x = 468,330.20 × 75,562.84
  4. Step 4: Simplify right side
    312,220.12x = 35,388,359,969.77
  5. Step 5: Solve for x
    x = 35,388,359,969.77/312,220.12
  6. Step 6: Final answer
    x = 113,344.26

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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.