Home / 458,979.71-687,977.35-221,996.39

Finding the Fourth Proportional to 458,979.71, 687,977.35 and 221,996.39

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Solution

The fourth proportional to 458,979.71, 687,977.35 and 221,996.39 is: 332,756.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,979.71 : 687,977.35 = 221,996.39 : x
  2. Step 2: Convert to fraction form
    458,979.71/687,977.35 = 221,996.39/x
  3. Step 3: Cross multiply
    458,979.71x = 687,977.35 × 221,996.39
  4. Step 4: Simplify right side
    458,979.71x = 152,728,484,106.89
  5. Step 5: Solve for x
    x = 152,728,484,106.89/458,979.71
  6. Step 6: Final answer
    x = 332,756.51

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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.