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Finding the Fourth Proportional to 352,136.10, 528,209.72 and 85,901.65

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Solution

The fourth proportional to 352,136.10, 528,209.72 and 85,901.65 is: 128,853.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,136.10 : 528,209.72 = 85,901.65 : x
  2. Step 2: Convert to fraction form
    352,136.10/528,209.72 = 85,901.65/x
  3. Step 3: Cross multiply
    352,136.10x = 528,209.72 × 85,901.65
  4. Step 4: Simplify right side
    352,136.10x = 45,374,086,494.04
  5. Step 5: Solve for x
    x = 45,374,086,494.04/352,136.10
  6. Step 6: Final answer
    x = 128,853.83

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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.