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Finding the Fourth Proportional to 312,069.20, 467,566.20 and 145,515.60

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Solution

The fourth proportional to 312,069.20, 467,566.20 and 145,515.60 is: 218,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,069.20 : 467,566.20 = 145,515.60 : x
  2. Step 2: Convert to fraction form
    312,069.20/467,566.20 = 145,515.60/x
  3. Step 3: Cross multiply
    312,069.20x = 467,566.20 × 145,515.60
  4. Step 4: Simplify right side
    312,069.20x = 68,038,176,132.72
  5. Step 5: Solve for x
    x = 68,038,176,132.72/312,069.20
  6. Step 6: Final answer
    x = 218,022.72

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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.