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Finding the Fourth Proportional to 279,797.70, 386,119.61 and 152,473.30

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Solution

The fourth proportional to 279,797.70, 386,119.61 and 152,473.30 is: 210,412.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,797.70 : 386,119.61 = 152,473.30 : x
  2. Step 2: Convert to fraction form
    279,797.70/386,119.61 = 152,473.30/x
  3. Step 3: Cross multiply
    279,797.70x = 386,119.61 × 152,473.30
  4. Step 4: Simplify right side
    279,797.70x = 58,872,931,131.41
  5. Step 5: Solve for x
    x = 58,872,931,131.41/279,797.70
  6. Step 6: Final answer
    x = 210,412.49

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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.