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Finding the Fourth Proportional to 279,660.30, 419,490.45 and 122,196.30

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Solution

The fourth proportional to 279,660.30, 419,490.45 and 122,196.30 is: 183,294.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,660.30 : 419,490.45 = 122,196.30 : x
  2. Step 2: Convert to fraction form
    279,660.30/419,490.45 = 122,196.30/x
  3. Step 3: Cross multiply
    279,660.30x = 419,490.45 × 122,196.30
  4. Step 4: Simplify right side
    279,660.30x = 51,260,180,875.34
  5. Step 5: Solve for x
    x = 51,260,180,875.34/279,660.30
  6. Step 6: Final answer
    x = 183,294.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.