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Finding the Fourth Proportional to 212,299.95, 318,022.52 and 98,287.05

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Solution

The fourth proportional to 212,299.95, 318,022.52 and 98,287.05 is: 147,232.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,299.95 : 318,022.52 = 98,287.05 : x
  2. Step 2: Convert to fraction form
    212,299.95/318,022.52 = 98,287.05/x
  3. Step 3: Cross multiply
    212,299.95x = 318,022.52 × 98,287.05
  4. Step 4: Simplify right side
    212,299.95x = 31,257,494,832.93
  5. Step 5: Solve for x
    x = 31,257,494,832.93/212,299.95
  6. Step 6: Final answer
    x = 147,232.70

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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.