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Finding the Fourth Proportional to 543,655.20, 815,482.80 and 169,629.60

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Solution

The fourth proportional to 543,655.20, 815,482.80 and 169,629.60 is: 254,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,655.20 : 815,482.80 = 169,629.60 : x
  2. Step 2: Convert to fraction form
    543,655.20/815,482.80 = 169,629.60/x
  3. Step 3: Cross multiply
    543,655.20x = 815,482.80 × 169,629.60
  4. Step 4: Simplify right side
    543,655.20x = 138,330,021,170.88
  5. Step 5: Solve for x
    x = 138,330,021,170.88/543,655.20
  6. Step 6: Final answer
    x = 254,444.40

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Similar ratio
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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.