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Finding the Fourth Proportional to 250,161.86, 345,216.98 and 139,781.40

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Solution

The fourth proportional to 250,161.86, 345,216.98 and 139,781.40 is: 192,894.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,161.86 : 345,216.98 = 139,781.40 : x
  2. Step 2: Convert to fraction form
    250,161.86/345,216.98 = 139,781.40/x
  3. Step 3: Cross multiply
    250,161.86x = 345,216.98 × 139,781.40
  4. Step 4: Simplify right side
    250,161.86x = 48,254,912,768.17
  5. Step 5: Solve for x
    x = 48,254,912,768.17/250,161.86
  6. Step 6: Final answer
    x = 192,894.76

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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.