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Finding the Fourth Proportional to 290,169.59, 399,775.34 and 224,532.75

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Solution

The fourth proportional to 290,169.59, 399,775.34 and 224,532.75 is: 309,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,169.59 : 399,775.34 = 224,532.75 : x
  2. Step 2: Convert to fraction form
    290,169.59/399,775.34 = 224,532.75/x
  3. Step 3: Cross multiply
    290,169.59x = 399,775.34 × 224,532.75
  4. Step 4: Simplify right side
    290,169.59x = 89,762,653,912.18
  5. Step 5: Solve for x
    x = 89,762,653,912.18/290,169.59
  6. Step 6: Final answer
    x = 309,345.49

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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.