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Finding the Fourth Proportional to 664,137.20, 996,497.40 and 308,968.40

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Solution

The fourth proportional to 664,137.20, 996,497.40 and 308,968.40 is: 463,588.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,137.20 : 996,497.40 = 308,968.40 : x
  2. Step 2: Convert to fraction form
    664,137.20/996,497.40 = 308,968.40/x
  3. Step 3: Cross multiply
    664,137.20x = 996,497.40 × 308,968.40
  4. Step 4: Simplify right side
    664,137.20x = 307,886,207,282.16
  5. Step 5: Solve for x
    x = 307,886,207,282.16/664,137.20
  6. Step 6: Final answer
    x = 463,588.26

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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.