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Finding the Fourth Proportional to 212,533.40, 318,873.92 and 94,287.78

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Solution

The fourth proportional to 212,533.40, 318,873.92 and 94,287.78 is: 141,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,533.40 : 318,873.92 = 94,287.78 : x
  2. Step 2: Convert to fraction form
    212,533.40/318,873.92 = 94,287.78/x
  3. Step 3: Cross multiply
    212,533.40x = 318,873.92 × 94,287.78
  4. Step 4: Simplify right side
    212,533.40x = 30,065,913,545.26
  5. Step 5: Solve for x
    x = 30,065,913,545.26/212,533.40
  6. Step 6: Final answer
    x = 141,464.42

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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.