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Finding the Fourth Proportional to 442,661.59, 610,855.32 and 261,431.92

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Solution

The fourth proportional to 442,661.59, 610,855.32 and 261,431.92 is: 360,765.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,661.59 : 610,855.32 = 261,431.92 : x
  2. Step 2: Convert to fraction form
    442,661.59/610,855.32 = 261,431.92/x
  3. Step 3: Cross multiply
    442,661.59x = 610,855.32 × 261,431.92
  4. Step 4: Simplify right side
    442,661.59x = 159,697,079,149.81
  5. Step 5: Solve for x
    x = 159,697,079,149.81/442,661.59
  6. Step 6: Final answer
    x = 360,765.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.