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Finding the Fourth Proportional to 386,645.20, 579,967.80 and 346,094.80

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Solution

The fourth proportional to 386,645.20, 579,967.80 and 346,094.80 is: 519,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,645.20 : 579,967.80 = 346,094.80 : x
  2. Step 2: Convert to fraction form
    386,645.20/579,967.80 = 346,094.80/x
  3. Step 3: Cross multiply
    386,645.20x = 579,967.80 × 346,094.80
  4. Step 4: Simplify right side
    386,645.20x = 200,723,839,747.44
  5. Step 5: Solve for x
    x = 200,723,839,747.44/386,645.20
  6. Step 6: Final answer
    x = 519,142.20

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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.