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Finding the Fourth Proportional to 253,878.38, 350,349.98 and 139,163.40

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Solution

The fourth proportional to 253,878.38, 350,349.98 and 139,163.40 is: 192,044.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,878.38 : 350,349.98 = 139,163.40 : x
  2. Step 2: Convert to fraction form
    253,878.38/350,349.98 = 139,163.40/x
  3. Step 3: Cross multiply
    253,878.38x = 350,349.98 × 139,163.40
  4. Step 4: Simplify right side
    253,878.38x = 48,755,894,406.73
  5. Step 5: Solve for x
    x = 48,755,894,406.73/253,878.38
  6. Step 6: Final answer
    x = 192,044.29

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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.