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Finding the Fourth Proportional to 495,683.80, 743,107.72 and 214,989.64

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Solution

The fourth proportional to 495,683.80, 743,107.72 and 214,989.64 is: 322,303.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,683.80 : 743,107.72 = 214,989.64 : x
  2. Step 2: Convert to fraction form
    495,683.80/743,107.72 = 214,989.64/x
  3. Step 3: Cross multiply
    495,683.80x = 743,107.72 × 214,989.64
  4. Step 4: Simplify right side
    495,683.80x = 159,760,461,204.02
  5. Step 5: Solve for x
    x = 159,760,461,204.02/495,683.80
  6. Step 6: Final answer
    x = 322,303.17

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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.