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Finding the Fourth Proportional to 534,781.80, 802,388.70 and 235,319.40

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Solution

The fourth proportional to 534,781.80, 802,388.70 and 235,319.40 is: 353,074.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,781.80 : 802,388.70 = 235,319.40 : x
  2. Step 2: Convert to fraction form
    534,781.80/802,388.70 = 235,319.40/x
  3. Step 3: Cross multiply
    534,781.80x = 802,388.70 × 235,319.40
  4. Step 4: Simplify right side
    534,781.80x = 188,817,627,450.78
  5. Step 5: Solve for x
    x = 188,817,627,450.78/534,781.80
  6. Step 6: Final answer
    x = 353,074.15

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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.