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Finding the Fourth Proportional to 290,474.40, 434,545.20 and 251,464.80

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Solution

The fourth proportional to 290,474.40, 434,545.20 and 251,464.80 is: 376,187.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,474.40 : 434,545.20 = 251,464.80 : x
  2. Step 2: Convert to fraction form
    290,474.40/434,545.20 = 251,464.80/x
  3. Step 3: Cross multiply
    290,474.40x = 434,545.20 × 251,464.80
  4. Step 4: Simplify right side
    290,474.40x = 109,272,821,808.96
  5. Step 5: Solve for x
    x = 109,272,821,808.96/290,474.40
  6. Step 6: Final answer
    x = 376,187.44

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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.