Home / 521,153.07-781,721.37-166,164.69

Finding the Fourth Proportional to 521,153.07, 781,721.37 and 166,164.69

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Solution

The fourth proportional to 521,153.07, 781,721.37 and 166,164.69 is: 249,244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,153.07 : 781,721.37 = 166,164.69 : x
  2. Step 2: Convert to fraction form
    521,153.07/781,721.37 = 166,164.69/x
  3. Step 3: Cross multiply
    521,153.07x = 781,721.37 × 166,164.69
  4. Step 4: Simplify right side
    521,153.07x = 129,894,489,112.43
  5. Step 5: Solve for x
    x = 129,894,489,112.43/521,153.07
  6. Step 6: Final answer
    x = 249,244.41

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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.