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Finding the Fourth Proportional to 312,259.68, 468,387.36 and 75,603.60

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Solution

The fourth proportional to 312,259.68, 468,387.36 and 75,603.60 is: 113,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,259.68 : 468,387.36 = 75,603.60 : x
  2. Step 2: Convert to fraction form
    312,259.68/468,387.36 = 75,603.60/x
  3. Step 3: Cross multiply
    312,259.68x = 468,387.36 × 75,603.60
  4. Step 4: Simplify right side
    312,259.68x = 35,411,770,610.50
  5. Step 5: Solve for x
    x = 35,411,770,610.50/312,259.68
  6. Step 6: Final answer
    x = 113,404.88

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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.