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Finding the Fourth Proportional to 342,712.32, 472,949.28 and 191,808.96

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Solution

The fourth proportional to 342,712.32, 472,949.28 and 191,808.96 is: 264,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,712.32 : 472,949.28 = 191,808.96 : x
  2. Step 2: Convert to fraction form
    342,712.32/472,949.28 = 191,808.96/x
  3. Step 3: Cross multiply
    342,712.32x = 472,949.28 × 191,808.96
  4. Step 4: Simplify right side
    342,712.32x = 90,715,909,529.55
  5. Step 5: Solve for x
    x = 90,715,909,529.55/342,712.32
  6. Step 6: Final answer
    x = 264,699.88

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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.