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Finding the Fourth Proportional to 98,266.40, 147,399.60 and 28,152.80

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Solution

The fourth proportional to 98,266.40, 147,399.60 and 28,152.80 is: 42,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,266.40 : 147,399.60 = 28,152.80 : x
  2. Step 2: Convert to fraction form
    98,266.40/147,399.60 = 28,152.80/x
  3. Step 3: Cross multiply
    98,266.40x = 147,399.60 × 28,152.80
  4. Step 4: Simplify right side
    98,266.40x = 4,149,711,458.88
  5. Step 5: Solve for x
    x = 4,149,711,458.88/98,266.40
  6. Step 6: Final answer
    x = 42,229.20

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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.