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Finding the Fourth Proportional to 245,435.73, 368,134.12 and 87,647.73

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Solution

The fourth proportional to 245,435.73, 368,134.12 and 87,647.73 is: 131,464.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,435.73 : 368,134.12 = 87,647.73 : x
  2. Step 2: Convert to fraction form
    245,435.73/368,134.12 = 87,647.73/x
  3. Step 3: Cross multiply
    245,435.73x = 368,134.12 × 87,647.73
  4. Step 4: Simplify right side
    245,435.73x = 32,266,119,953.55
  5. Step 5: Solve for x
    x = 32,266,119,953.55/245,435.73
  6. Step 6: Final answer
    x = 131,464.64

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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.