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Finding the Fourth Proportional to 354,310, 488,967.24 and 203,416.72

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Solution

The fourth proportional to 354,310, 488,967.24 and 203,416.72 is: 280,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,310 : 488,967.24 = 203,416.72 : x
  2. Step 2: Convert to fraction form
    354,310/488,967.24 = 203,416.72/x
  3. Step 3: Cross multiply
    354,310x = 488,967.24 × 203,416.72
  4. Step 4: Simplify right side
    354,310x = 99,464,112,148.25
  5. Step 5: Solve for x
    x = 99,464,112,148.25/354,310
  6. Step 6: Final answer
    x = 280,726.23

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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.