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Finding the Fourth Proportional to 355,295.43, 490,307.72 and 191,951.91

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Solution

The fourth proportional to 355,295.43, 490,307.72 and 191,951.91 is: 264,893.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,295.43 : 490,307.72 = 191,951.91 : x
  2. Step 2: Convert to fraction form
    355,295.43/490,307.72 = 191,951.91/x
  3. Step 3: Cross multiply
    355,295.43x = 490,307.72 × 191,951.91
  4. Step 4: Simplify right side
    355,295.43x = 94,115,502,381.99
  5. Step 5: Solve for x
    x = 94,115,502,381.99/355,295.43
  6. Step 6: Final answer
    x = 264,893.65

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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.