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Finding the Fourth Proportional to 290,168.78, 399,774.22 and 224,531.93

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Solution

The fourth proportional to 290,168.78, 399,774.22 and 224,531.93 is: 309,344.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,168.78 : 399,774.22 = 224,531.93 : x
  2. Step 2: Convert to fraction form
    290,168.78/399,774.22 = 224,531.93/x
  3. Step 3: Cross multiply
    290,168.78x = 399,774.22 × 224,531.93
  4. Step 4: Simplify right side
    290,168.78x = 89,762,077,618.95
  5. Step 5: Solve for x
    x = 89,762,077,618.95/290,168.78
  6. Step 6: Final answer
    x = 309,344.37

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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.