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Finding the Fourth Proportional to 279,814.44, 386,132.65 and 152,487.30

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Solution

The fourth proportional to 279,814.44, 386,132.65 and 152,487.30 is: 210,426.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,814.44 : 386,132.65 = 152,487.30 : x
  2. Step 2: Convert to fraction form
    279,814.44/386,132.65 = 152,487.30/x
  3. Step 3: Cross multiply
    279,814.44x = 386,132.65 × 152,487.30
  4. Step 4: Simplify right side
    279,814.44x = 58,880,325,240.35
  5. Step 5: Solve for x
    x = 58,880,325,240.35/279,814.44
  6. Step 6: Final answer
    x = 210,426.33

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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.