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Finding the Fourth Proportional to 279,967.66, 386,363.82 and 152,645.38

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Solution

The fourth proportional to 279,967.66, 386,363.82 and 152,645.38 is: 210,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,967.66 : 386,363.82 = 152,645.38 : x
  2. Step 2: Convert to fraction form
    279,967.66/386,363.82 = 152,645.38/x
  3. Step 3: Cross multiply
    279,967.66x = 386,363.82 × 152,645.38
  4. Step 4: Simplify right side
    279,967.66x = 58,976,651,728.66
  5. Step 5: Solve for x
    x = 58,976,651,728.66/279,967.66
  6. Step 6: Final answer
    x = 210,655.23

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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.