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Finding the Fourth Proportional to 354,213.75, 488,815.29 and 193,065.57

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Solution

The fourth proportional to 354,213.75, 488,815.29 and 193,065.57 is: 266,430.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,213.75 : 488,815.29 = 193,065.57 : x
  2. Step 2: Convert to fraction form
    354,213.75/488,815.29 = 193,065.57/x
  3. Step 3: Cross multiply
    354,213.75x = 488,815.29 × 193,065.57
  4. Step 4: Simplify right side
    354,213.75x = 94,373,402,588.57
  5. Step 5: Solve for x
    x = 94,373,402,588.57/354,213.75
  6. Step 6: Final answer
    x = 266,430.66

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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.