Home / 521,028.78-781,528.56-166,064.10

Finding the Fourth Proportional to 521,028.78, 781,528.56 and 166,064.10

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Solution

The fourth proportional to 521,028.78, 781,528.56 and 166,064.10 is: 249,091.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,028.78 : 781,528.56 = 166,064.10 : x
  2. Step 2: Convert to fraction form
    521,028.78/781,528.56 = 166,064.10/x
  3. Step 3: Cross multiply
    521,028.78x = 781,528.56 × 166,064.10
  4. Step 4: Simplify right side
    521,028.78x = 129,783,836,940.70
  5. Step 5: Solve for x
    x = 129,783,836,940.70/521,028.78
  6. Step 6: Final answer
    x = 249,091.49

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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.