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Finding the Fourth Proportional to 206,682.30, 310,023.45 and 66,455.10

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Solution

The fourth proportional to 206,682.30, 310,023.45 and 66,455.10 is: 99,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,682.30 : 310,023.45 = 66,455.10 : x
  2. Step 2: Convert to fraction form
    206,682.30/310,023.45 = 66,455.10/x
  3. Step 3: Cross multiply
    206,682.30x = 310,023.45 × 66,455.10
  4. Step 4: Simplify right side
    206,682.30x = 20,602,639,372.10
  5. Step 5: Solve for x
    x = 20,602,639,372.10/206,682.30
  6. Step 6: Final answer
    x = 99,682.65

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1.5x scale

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.