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Finding the Fourth Proportional to 302,912.10, 454,368.15 and 145,059.30

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Solution

The fourth proportional to 302,912.10, 454,368.15 and 145,059.30 is: 217,588.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,912.10 : 454,368.15 = 145,059.30 : x
  2. Step 2: Convert to fraction form
    302,912.10/454,368.15 = 145,059.30/x
  3. Step 3: Cross multiply
    302,912.10x = 454,368.15 × 145,059.30
  4. Step 4: Simplify right side
    302,912.10x = 65,910,325,781.30
  5. Step 5: Solve for x
    x = 65,910,325,781.30/302,912.10
  6. Step 6: Final answer
    x = 217,588.95

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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.