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Finding the Fourth Proportional to 290,499.40, 434,582.70 and 251,489.80

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Solution

The fourth proportional to 290,499.40, 434,582.70 and 251,489.80 is: 376,224.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,499.40 : 434,582.70 = 251,489.80 : x
  2. Step 2: Convert to fraction form
    290,499.40/434,582.70 = 251,489.80/x
  3. Step 3: Cross multiply
    290,499.40x = 434,582.70 × 251,489.80
  4. Step 4: Simplify right side
    290,499.40x = 109,293,116,306.46
  5. Step 5: Solve for x
    x = 109,293,116,306.46/290,499.40
  6. Step 6: Final answer
    x = 376,224.93

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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.