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Finding the Fourth Proportional to 279,972.45, 386,355.42 and 152,647.74

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Solution

The fourth proportional to 279,972.45, 386,355.42 and 152,647.74 is: 210,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,972.45 : 386,355.42 = 152,647.74 : x
  2. Step 2: Convert to fraction form
    279,972.45/386,355.42 = 152,647.74/x
  3. Step 3: Cross multiply
    279,972.45x = 386,355.42 × 152,647.74
  4. Step 4: Simplify right side
    279,972.45x = 58,976,281,699.75
  5. Step 5: Solve for x
    x = 58,976,281,699.75/279,972.45
  6. Step 6: Final answer
    x = 210,650.30

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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.