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Finding the Fourth Proportional to 664,314.80, 996,569.40 and 214,959.20

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Solution

The fourth proportional to 664,314.80, 996,569.40 and 214,959.20 is: 322,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,314.80 : 996,569.40 = 214,959.20 : x
  2. Step 2: Convert to fraction form
    664,314.80/996,569.40 = 214,959.20/x
  3. Step 3: Cross multiply
    664,314.80x = 996,569.40 × 214,959.20
  4. Step 4: Simplify right side
    664,314.80x = 214,221,760,968.48
  5. Step 5: Solve for x
    x = 214,221,760,968.48/664,314.80
  6. Step 6: Final answer
    x = 322,470.25

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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.