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Finding the Fourth Proportional to 354,042.12, 488,354.94 and 210,695.16

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Solution

The fourth proportional to 354,042.12, 488,354.94 and 210,695.16 is: 290,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,042.12 : 488,354.94 = 210,695.16 : x
  2. Step 2: Convert to fraction form
    354,042.12/488,354.94 = 210,695.16/x
  3. Step 3: Cross multiply
    354,042.12x = 488,354.94 × 210,695.16
  4. Step 4: Simplify right side
    354,042.12x = 102,894,022,220.09
  5. Step 5: Solve for x
    x = 102,894,022,220.09/354,042.12
  6. Step 6: Final answer
    x = 290,626.50

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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.