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Finding the Fourth Proportional to 279,752.75, 386,053.59 and 155,581.35

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Solution

The fourth proportional to 279,752.75, 386,053.59 and 155,581.35 is: 214,699.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,752.75 : 386,053.59 = 155,581.35 : x
  2. Step 2: Convert to fraction form
    279,752.75/386,053.59 = 155,581.35/x
  3. Step 3: Cross multiply
    279,752.75x = 386,053.59 × 155,581.35
  4. Step 4: Simplify right side
    279,752.75x = 60,062,738,704.55
  5. Step 5: Solve for x
    x = 60,062,738,704.55/279,752.75
  6. Step 6: Final answer
    x = 214,699.37

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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.