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Finding the Fourth Proportional to 379,036.67, 523,070.46 and 217,923.21

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Solution

The fourth proportional to 379,036.67, 523,070.46 and 217,923.21 is: 300,733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,036.67 : 523,070.46 = 217,923.21 : x
  2. Step 2: Convert to fraction form
    379,036.67/523,070.46 = 217,923.21/x
  3. Step 3: Cross multiply
    379,036.67x = 523,070.46 × 217,923.21
  4. Step 4: Simplify right side
    379,036.67x = 113,989,193,699.38
  5. Step 5: Solve for x
    x = 113,989,193,699.38/379,036.67
  6. Step 6: Final answer
    x = 300,733.95

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Double scale
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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.