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Finding the Fourth Proportional to 279,050.40, 418,705.20 and 146,080.80

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Solution

The fourth proportional to 279,050.40, 418,705.20 and 146,080.80 is: 219,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,050.40 : 418,705.20 = 146,080.80 : x
  2. Step 2: Convert to fraction form
    279,050.40/418,705.20 = 146,080.80/x
  3. Step 3: Cross multiply
    279,050.40x = 418,705.20 × 146,080.80
  4. Step 4: Simplify right side
    279,050.40x = 61,164,790,580.16
  5. Step 5: Solve for x
    x = 61,164,790,580.16/279,050.40
  6. Step 6: Final answer
    x = 219,189.04

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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.