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Finding the Fourth Proportional to 612,144.80, 918,346.80 and 185,645.60

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Solution

The fourth proportional to 612,144.80, 918,346.80 and 185,645.60 is: 278,507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,144.80 : 918,346.80 = 185,645.60 : x
  2. Step 2: Convert to fraction form
    612,144.80/918,346.80 = 185,645.60/x
  3. Step 3: Cross multiply
    612,144.80x = 918,346.80 × 185,645.60
  4. Step 4: Simplify right side
    612,144.80x = 170,487,042,694.08
  5. Step 5: Solve for x
    x = 170,487,042,694.08/612,144.80
  6. Step 6: Final answer
    x = 278,507.70

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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.