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Finding the Fourth Proportional to 304,355.31, 420,144.84 and 181,890.90

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Solution

The fourth proportional to 304,355.31, 420,144.84 and 181,890.90 is: 251,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,355.31 : 420,144.84 = 181,890.90 : x
  2. Step 2: Convert to fraction form
    304,355.31/420,144.84 = 181,890.90/x
  3. Step 3: Cross multiply
    304,355.31x = 420,144.84 × 181,890.90
  4. Step 4: Simplify right side
    304,355.31x = 76,420,523,077.96
  5. Step 5: Solve for x
    x = 76,420,523,077.96/304,355.31
  6. Step 6: Final answer
    x = 251,089.83

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1.5x scale

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.