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Finding the Fourth Proportional to 289,704.78, 434,652.75 and 112,212.72

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Solution

The fourth proportional to 289,704.78, 434,652.75 and 112,212.72 is: 168,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,704.78 : 434,652.75 = 112,212.72 : x
  2. Step 2: Convert to fraction form
    289,704.78/434,652.75 = 112,212.72/x
  3. Step 3: Cross multiply
    289,704.78x = 434,652.75 × 112,212.72
  4. Step 4: Simplify right side
    289,704.78x = 48,773,567,332.98
  5. Step 5: Solve for x
    x = 48,773,567,332.98/289,704.78
  6. Step 6: Final answer
    x = 168,356.10

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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.