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Finding the Fourth Proportional to 534,970.90, 802,270.25 and 215,027.79

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Solution

The fourth proportional to 534,970.90, 802,270.25 and 215,027.79 is: 322,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,970.90 : 802,270.25 = 215,027.79 : x
  2. Step 2: Convert to fraction form
    534,970.90/802,270.25 = 215,027.79/x
  3. Step 3: Cross multiply
    534,970.90x = 802,270.25 × 215,027.79
  4. Step 4: Simplify right side
    534,970.90x = 172,510,398,840.25
  5. Step 5: Solve for x
    x = 172,510,398,840.25/534,970.90
  6. Step 6: Final answer
    x = 322,466.88

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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.