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Finding the Fourth Proportional to 315,590.28, 435,382.47 and 192,989.80

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Solution

The fourth proportional to 315,590.28, 435,382.47 and 192,989.80 is: 266,245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,590.28 : 435,382.47 = 192,989.80 : x
  2. Step 2: Convert to fraction form
    315,590.28/435,382.47 = 192,989.80/x
  3. Step 3: Cross multiply
    315,590.28x = 435,382.47 × 192,989.80
  4. Step 4: Simplify right side
    315,590.28x = 84,024,375,808.81
  5. Step 5: Solve for x
    x = 84,024,375,808.81/315,590.28
  6. Step 6: Final answer
    x = 266,245.13

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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.