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Finding the Fourth Proportional to 437,202.72, 655,632.12 and 212,497.32

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Solution

The fourth proportional to 437,202.72, 655,632.12 and 212,497.32 is: 318,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,202.72 : 655,632.12 = 212,497.32 : x
  2. Step 2: Convert to fraction form
    437,202.72/655,632.12 = 212,497.32/x
  3. Step 3: Cross multiply
    437,202.72x = 655,632.12 × 212,497.32
  4. Step 4: Simplify right side
    437,202.72x = 139,320,068,405.92
  5. Step 5: Solve for x
    x = 139,320,068,405.92/437,202.72
  6. Step 6: Final answer
    x = 318,662.40

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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.