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Finding the Fourth Proportional to 354,084.71, 488,642.48 and 192,939.66

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Solution

The fourth proportional to 354,084.71, 488,642.48 and 192,939.66 is: 266,259.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,084.71 : 488,642.48 = 192,939.66 : x
  2. Step 2: Convert to fraction form
    354,084.71/488,642.48 = 192,939.66/x
  3. Step 3: Cross multiply
    354,084.71x = 488,642.48 × 192,939.66
  4. Step 4: Simplify right side
    354,084.71x = 94,278,512,988.06
  5. Step 5: Solve for x
    x = 94,278,512,988.06/354,084.71
  6. Step 6: Final answer
    x = 266,259.77

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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.