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Finding the Fourth Proportional to 379,643.51, 569,249.60 and 154,740.53

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Solution

The fourth proportional to 379,643.51, 569,249.60 and 154,740.53 is: 232,022.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,643.51 : 569,249.60 = 154,740.53 : x
  2. Step 2: Convert to fraction form
    379,643.51/569,249.60 = 154,740.53/x
  3. Step 3: Cross multiply
    379,643.51x = 569,249.60 × 154,740.53
  4. Step 4: Simplify right side
    379,643.51x = 88,085,981,186.34
  5. Step 5: Solve for x
    x = 88,085,981,186.34/379,643.51
  6. Step 6: Final answer
    x = 232,022.88

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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.