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Finding the Fourth Proportional to 212,295.10, 318,445.84 and 54,520.06

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Solution

The fourth proportional to 212,295.10, 318,445.84 and 54,520.06 is: 81,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,295.10 : 318,445.84 = 54,520.06 : x
  2. Step 2: Convert to fraction form
    212,295.10/318,445.84 = 54,520.06/x
  3. Step 3: Cross multiply
    212,295.10x = 318,445.84 × 54,520.06
  4. Step 4: Simplify right side
    212,295.10x = 17,361,686,303.55
  5. Step 5: Solve for x
    x = 17,361,686,303.55/212,295.10
  6. Step 6: Final answer
    x = 81,780.91

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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.