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Finding the Fourth Proportional to 259,543.53, 389,314.62 and 101,661.57

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Solution

The fourth proportional to 259,543.53, 389,314.62 and 101,661.57 is: 152,492.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,543.53 : 389,314.62 = 101,661.57 : x
  2. Step 2: Convert to fraction form
    259,543.53/389,314.62 = 101,661.57/x
  3. Step 3: Cross multiply
    259,543.53x = 389,314.62 × 101,661.57
  4. Step 4: Simplify right side
    259,543.53x = 39,578,335,493.15
  5. Step 5: Solve for x
    x = 39,578,335,493.15/259,543.53
  6. Step 6: Final answer
    x = 152,492.09

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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.