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Finding the Fourth Proportional to 279,844.88, 386,185.93 and 152,520.77

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Solution

The fourth proportional to 279,844.88, 386,185.93 and 152,520.77 is: 210,478.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,844.88 : 386,185.93 = 152,520.77 : x
  2. Step 2: Convert to fraction form
    279,844.88/386,185.93 = 152,520.77/x
  3. Step 3: Cross multiply
    279,844.88x = 386,185.93 × 152,520.77
  4. Step 4: Simplify right side
    279,844.88x = 58,901,375,990.93
  5. Step 5: Solve for x
    x = 58,901,375,990.93/279,844.88
  6. Step 6: Final answer
    x = 210,478.67

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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.