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Finding the Fourth Proportional to 279,665.16, 385,943.88 and 152,340.48

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Solution

The fourth proportional to 279,665.16, 385,943.88 and 152,340.48 is: 210,233.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,665.16 : 385,943.88 = 152,340.48 : x
  2. Step 2: Convert to fraction form
    279,665.16/385,943.88 = 152,340.48/x
  3. Step 3: Cross multiply
    279,665.16x = 385,943.88 × 152,340.48
  4. Step 4: Simplify right side
    279,665.16x = 58,794,875,932.26
  5. Step 5: Solve for x
    x = 58,794,875,932.26/279,665.16
  6. Step 6: Final answer
    x = 210,233.11

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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.