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Finding the Fourth Proportional to 362,243.30, 543,364.95 and 212,555.30

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Solution

The fourth proportional to 362,243.30, 543,364.95 and 212,555.30 is: 318,832.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,243.30 : 543,364.95 = 212,555.30 : x
  2. Step 2: Convert to fraction form
    362,243.30/543,364.95 = 212,555.30/x
  3. Step 3: Cross multiply
    362,243.30x = 543,364.95 × 212,555.30
  4. Step 4: Simplify right side
    362,243.30x = 115,495,099,956.74
  5. Step 5: Solve for x
    x = 115,495,099,956.74/362,243.30
  6. Step 6: Final answer
    x = 318,832.95

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Similar ratio
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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.