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Finding the Fourth Proportional to 354,279.45, 488,894.27 and 193,131.93

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Solution

The fourth proportional to 354,279.45, 488,894.27 and 193,131.93 is: 266,515.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,279.45 : 488,894.27 = 193,131.93 : x
  2. Step 2: Convert to fraction form
    354,279.45/488,894.27 = 193,131.93/x
  3. Step 3: Cross multiply
    354,279.45x = 488,894.27 × 193,131.93
  4. Step 4: Simplify right side
    354,279.45x = 94,421,092,965.38
  5. Step 5: Solve for x
    x = 94,421,092,965.38/354,279.45
  6. Step 6: Final answer
    x = 266,515.86

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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.