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Finding the Fourth Proportional to 279,765.94, 386,077.08 and 152,441.59

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Solution

The fourth proportional to 279,765.94, 386,077.08 and 152,441.59 is: 210,369.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,765.94 : 386,077.08 = 152,441.59 : x
  2. Step 2: Convert to fraction form
    279,765.94/386,077.08 = 152,441.59/x
  3. Step 3: Cross multiply
    279,765.94x = 386,077.08 × 152,441.59
  4. Step 4: Simplify right side
    279,765.94x = 58,854,203,937.76
  5. Step 5: Solve for x
    x = 58,854,203,937.76/279,765.94
  6. Step 6: Final answer
    x = 210,369.44

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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.