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Finding the Fourth Proportional to 495,685.80, 743,110.74 and 214,991.64

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Solution

The fourth proportional to 495,685.80, 743,110.74 and 214,991.64 is: 322,306.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,685.80 : 743,110.74 = 214,991.64 : x
  2. Step 2: Convert to fraction form
    495,685.80/743,110.74 = 214,991.64/x
  3. Step 3: Cross multiply
    495,685.80x = 743,110.74 × 214,991.64
  4. Step 4: Simplify right side
    495,685.80x = 159,762,596,694.21
  5. Step 5: Solve for x
    x = 159,762,596,694.21/495,685.80
  6. Step 6: Final answer
    x = 322,306.18

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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.