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Finding the Fourth Proportional to 285,234.20, 427,851.30 and 145,266.20

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Solution

The fourth proportional to 285,234.20, 427,851.30 and 145,266.20 is: 217,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,234.20 : 427,851.30 = 145,266.20 : x
  2. Step 2: Convert to fraction form
    285,234.20/427,851.30 = 145,266.20/x
  3. Step 3: Cross multiply
    285,234.20x = 427,851.30 × 145,266.20
  4. Step 4: Simplify right side
    285,234.20x = 62,152,332,516.06
  5. Step 5: Solve for x
    x = 62,152,332,516.06/285,234.20
  6. Step 6: Final answer
    x = 217,899.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.