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Finding the Fourth Proportional to 481,202.20, 721,803.30 and 345,899.80

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Solution

The fourth proportional to 481,202.20, 721,803.30 and 345,899.80 is: 518,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,202.20 : 721,803.30 = 345,899.80 : x
  2. Step 2: Convert to fraction form
    481,202.20/721,803.30 = 345,899.80/x
  3. Step 3: Cross multiply
    481,202.20x = 721,803.30 × 345,899.80
  4. Step 4: Simplify right side
    481,202.20x = 249,671,617,109.34
  5. Step 5: Solve for x
    x = 249,671,617,109.34/481,202.20
  6. Step 6: Final answer
    x = 518,849.70

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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.