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Finding the Fourth Proportional to 403,572.60, 605,213.10 and 163,585.80

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Solution

The fourth proportional to 403,572.60, 605,213.10 and 163,585.80 is: 245,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,572.60 : 605,213.10 = 163,585.80 : x
  2. Step 2: Convert to fraction form
    403,572.60/605,213.10 = 163,585.80/x
  3. Step 3: Cross multiply
    403,572.60x = 605,213.10 × 163,585.80
  4. Step 4: Simplify right side
    403,572.60x = 99,004,269,133.98
  5. Step 5: Solve for x
    x = 99,004,269,133.98/403,572.60
  6. Step 6: Final answer
    x = 245,319.60

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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.