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Finding the Fourth Proportional to 279,612.38, 385,915.12 and 164,884.07

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Solution

The fourth proportional to 279,612.38, 385,915.12 and 164,884.07 is: 227,569.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,612.38 : 385,915.12 = 164,884.07 : x
  2. Step 2: Convert to fraction form
    279,612.38/385,915.12 = 164,884.07/x
  3. Step 3: Cross multiply
    279,612.38x = 385,915.12 × 164,884.07
  4. Step 4: Simplify right side
    279,612.38x = 63,631,255,660.14
  5. Step 5: Solve for x
    x = 63,631,255,660.14/279,612.38
  6. Step 6: Final answer
    x = 227,569.52

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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.