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Finding the Fourth Proportional to 312,104.80, 468,157.20 and 112,520.80

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Solution

The fourth proportional to 312,104.80, 468,157.20 and 112,520.80 is: 168,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,104.80 : 468,157.20 = 112,520.80 : x
  2. Step 2: Convert to fraction form
    312,104.80/468,157.20 = 112,520.80/x
  3. Step 3: Cross multiply
    312,104.80x = 468,157.20 × 112,520.80
  4. Step 4: Simplify right side
    312,104.80x = 52,677,422,669.76
  5. Step 5: Solve for x
    x = 52,677,422,669.76/312,104.80
  6. Step 6: Final answer
    x = 168,781.20

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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.