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Finding the Fourth Proportional to 664,480.60, 996,866.70 and 215,222.20

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Solution

The fourth proportional to 664,480.60, 996,866.70 and 215,222.20 is: 322,880.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,480.60 : 996,866.70 = 215,222.20 : x
  2. Step 2: Convert to fraction form
    664,480.60/996,866.70 = 215,222.20/x
  3. Step 3: Cross multiply
    664,480.60x = 996,866.70 × 215,222.20
  4. Step 4: Simplify right side
    664,480.60x = 214,547,844,280.74
  5. Step 5: Solve for x
    x = 214,547,844,280.74/664,480.60
  6. Step 6: Final answer
    x = 322,880.52

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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.