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Finding the Fourth Proportional to 279,766.44, 386,070.30 and 152,434.44

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Solution

The fourth proportional to 279,766.44, 386,070.30 and 152,434.44 is: 210,355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,766.44 : 386,070.30 = 152,434.44 : x
  2. Step 2: Convert to fraction form
    279,766.44/386,070.30 = 152,434.44/x
  3. Step 3: Cross multiply
    279,766.44x = 386,070.30 × 152,434.44
  4. Step 4: Simplify right side
    279,766.44x = 58,850,409,981.13
  5. Step 5: Solve for x
    x = 58,850,409,981.13/279,766.44
  6. Step 6: Final answer
    x = 210,355.50

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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.