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Finding the Fourth Proportional to 352,428.19, 486,337.89 and 191,279.78

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Solution

The fourth proportional to 352,428.19, 486,337.89 and 191,279.78 is: 263,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,428.19 : 486,337.89 = 191,279.78 : x
  2. Step 2: Convert to fraction form
    352,428.19/486,337.89 = 191,279.78/x
  3. Step 3: Cross multiply
    352,428.19x = 486,337.89 × 191,279.78
  4. Step 4: Simplify right side
    352,428.19x = 93,026,604,604.86
  5. Step 5: Solve for x
    x = 93,026,604,604.86/352,428.19
  6. Step 6: Final answer
    x = 263,959.03

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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.