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Finding the Fourth Proportional to 322,089.57, 483,159.78 and 85,432.32

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Solution

The fourth proportional to 322,089.57, 483,159.78 and 85,432.32 is: 128,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,089.57 : 483,159.78 = 85,432.32 : x
  2. Step 2: Convert to fraction form
    322,089.57/483,159.78 = 85,432.32/x
  3. Step 3: Cross multiply
    322,089.57x = 483,159.78 × 85,432.32
  4. Step 4: Simplify right side
    322,089.57x = 41,277,460,936.09
  5. Step 5: Solve for x
    x = 41,277,460,936.09/322,089.57
  6. Step 6: Final answer
    x = 128,155.22

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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.