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Finding the Fourth Proportional to 547,781.90, 821,736.85 and 173,842.70

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Solution

The fourth proportional to 547,781.90, 821,736.85 and 173,842.70 is: 260,784.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,781.90 : 821,736.85 = 173,842.70 : x
  2. Step 2: Convert to fraction form
    547,781.90/821,736.85 = 173,842.70/x
  3. Step 3: Cross multiply
    547,781.90x = 821,736.85 × 173,842.70
  4. Step 4: Simplify right side
    547,781.90x = 142,852,952,693.50
  5. Step 5: Solve for x
    x = 142,852,952,693.50/547,781.90
  6. Step 6: Final answer
    x = 260,784.36

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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.