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Finding the Fourth Proportional to 523,018.80, 784,528.20 and 148,993.20

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Solution

The fourth proportional to 523,018.80, 784,528.20 and 148,993.20 is: 223,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,018.80 : 784,528.20 = 148,993.20 : x
  2. Step 2: Convert to fraction form
    523,018.80/784,528.20 = 148,993.20/x
  3. Step 3: Cross multiply
    523,018.80x = 784,528.20 × 148,993.20
  4. Step 4: Simplify right side
    523,018.80x = 116,889,367,008.24
  5. Step 5: Solve for x
    x = 116,889,367,008.24/523,018.80
  6. Step 6: Final answer
    x = 223,489.80

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Double scale
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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.