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Finding the Fourth Proportional to 521,223.51, 781,893.59 and 166,155.15

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Solution

The fourth proportional to 521,223.51, 781,893.59 and 166,155.15 is: 249,251.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,223.51 : 781,893.59 = 166,155.15 : x
  2. Step 2: Convert to fraction form
    521,223.51/781,893.59 = 166,155.15/x
  3. Step 3: Cross multiply
    521,223.51x = 781,893.59 × 166,155.15
  4. Step 4: Simplify right side
    521,223.51x = 129,915,645,899.71
  5. Step 5: Solve for x
    x = 129,915,645,899.71/521,223.51
  6. Step 6: Final answer
    x = 249,251.32

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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.