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Finding the Fourth Proportional to 664,331.60, 996,643.20 and 215,073.20

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Solution

The fourth proportional to 664,331.60, 996,643.20 and 215,073.20 is: 322,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,331.60 : 996,643.20 = 215,073.20 : x
  2. Step 2: Convert to fraction form
    664,331.60/996,643.20 = 215,073.20/x
  3. Step 3: Cross multiply
    664,331.60x = 996,643.20 × 215,073.20
  4. Step 4: Simplify right side
    664,331.60x = 214,351,242,282.24
  5. Step 5: Solve for x
    x = 214,351,242,282.24/664,331.60
  6. Step 6: Final answer
    x = 322,657.00

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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.