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Finding the Fourth Proportional to 354,129.60, 488,684.63 and 192,981.21

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Solution

The fourth proportional to 354,129.60, 488,684.63 and 192,981.21 is: 266,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,129.60 : 488,684.63 = 192,981.21 : x
  2. Step 2: Convert to fraction form
    354,129.60/488,684.63 = 192,981.21/x
  3. Step 3: Cross multiply
    354,129.60x = 488,684.63 × 192,981.21
  4. Step 4: Simplify right side
    354,129.60x = 94,306,951,462.61
  5. Step 5: Solve for x
    x = 94,306,951,462.61/354,129.60
  6. Step 6: Final answer
    x = 266,306.32

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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.