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Finding the Fourth Proportional to 279,972.60, 386,364 and 152,650.32

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Solution

The fourth proportional to 279,972.60, 386,364 and 152,650.32 is: 210,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,972.60 : 386,364 = 152,650.32 : x
  2. Step 2: Convert to fraction form
    279,972.60/386,364 = 152,650.32/x
  3. Step 3: Cross multiply
    279,972.60x = 386,364 × 152,650.32
  4. Step 4: Simplify right side
    279,972.60x = 58,978,588,236.48
  5. Step 5: Solve for x
    x = 58,978,588,236.48/279,972.60
  6. Step 6: Final answer
    x = 210,658.43

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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.