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Finding the Fourth Proportional to 279,384.43, 385,550.52 and 152,060.95

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Solution

The fourth proportional to 279,384.43, 385,550.52 and 152,060.95 is: 209,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,384.43 : 385,550.52 = 152,060.95 : x
  2. Step 2: Convert to fraction form
    279,384.43/385,550.52 = 152,060.95/x
  3. Step 3: Cross multiply
    279,384.43x = 385,550.52 × 152,060.95
  4. Step 4: Simplify right side
    279,384.43x = 58,627,178,344.19
  5. Step 5: Solve for x
    x = 58,627,178,344.19/279,384.43
  6. Step 6: Final answer
    x = 209,844.11

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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.