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Finding the Fourth Proportional to 664,782.80, 996,979.80 and 238,269.20

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Solution

The fourth proportional to 664,782.80, 996,979.80 and 238,269.20 is: 357,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,782.80 : 996,979.80 = 238,269.20 : x
  2. Step 2: Convert to fraction form
    664,782.80/996,979.80 = 238,269.20/x
  3. Step 3: Cross multiply
    664,782.80x = 996,979.80 × 238,269.20
  4. Step 4: Simplify right side
    664,782.80x = 237,549,579,362.16
  5. Step 5: Solve for x
    x = 237,549,579,362.16/664,782.80
  6. Step 6: Final answer
    x = 357,334.12

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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.