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Finding the Fourth Proportional to 279,880, 386,228.66 and 152,554.48

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Solution

The fourth proportional to 279,880, 386,228.66 and 152,554.48 is: 210,522.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,880 : 386,228.66 = 152,554.48 : x
  2. Step 2: Convert to fraction form
    279,880/386,228.66 = 152,554.48/x
  3. Step 3: Cross multiply
    279,880x = 386,228.66 × 152,554.48
  4. Step 4: Simplify right side
    279,880x = 58,920,912,387.40
  5. Step 5: Solve for x
    x = 58,920,912,387.40/279,880
  6. Step 6: Final answer
    x = 210,522.05

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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.