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Finding the Fourth Proportional to 352,478.98, 486,408 and 191,330.49

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Solution

The fourth proportional to 352,478.98, 486,408 and 191,330.49 is: 264,029.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,478.98 : 486,408 = 191,330.49 : x
  2. Step 2: Convert to fraction form
    352,478.98/486,408 = 191,330.49/x
  3. Step 3: Cross multiply
    352,478.98x = 486,408 × 191,330.49
  4. Step 4: Simplify right side
    352,478.98x = 93,064,680,979.92
  5. Step 5: Solve for x
    x = 93,064,680,979.92/352,478.98
  6. Step 6: Final answer
    x = 264,029.02

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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.