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Finding the Fourth Proportional to 322,078.64, 483,117.96 and 85,439.84

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Solution

The fourth proportional to 322,078.64, 483,117.96 and 85,439.84 is: 128,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,078.64 : 483,117.96 = 85,439.84 : x
  2. Step 2: Convert to fraction form
    322,078.64/483,117.96 = 85,439.84/x
  3. Step 3: Cross multiply
    322,078.64x = 483,117.96 × 85,439.84
  4. Step 4: Simplify right side
    322,078.64x = 41,277,521,203.53
  5. Step 5: Solve for x
    x = 41,277,521,203.53/322,078.64
  6. Step 6: Final answer
    x = 128,159.76

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1.5x scale

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.