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Finding the Fourth Proportional to 386,064.19, 579,104.70 and 271,744.84

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Solution

The fourth proportional to 386,064.19, 579,104.70 and 271,744.84 is: 407,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,064.19 : 579,104.70 = 271,744.84 : x
  2. Step 2: Convert to fraction form
    386,064.19/579,104.70 = 271,744.84/x
  3. Step 3: Cross multiply
    386,064.19x = 579,104.70 × 271,744.84
  4. Step 4: Simplify right side
    386,064.19x = 157,368,714,044.75
  5. Step 5: Solve for x
    x = 157,368,714,044.75/386,064.19
  6. Step 6: Final answer
    x = 407,623.18

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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.