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Finding the Fourth Proportional to 298,892.82, 448,446.30 and 128,042.86

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Solution

The fourth proportional to 298,892.82, 448,446.30 and 128,042.86 is: 192,110.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,892.82 : 448,446.30 = 128,042.86 : x
  2. Step 2: Convert to fraction form
    298,892.82/448,446.30 = 128,042.86/x
  3. Step 3: Cross multiply
    298,892.82x = 448,446.30 × 128,042.86
  4. Step 4: Simplify right side
    298,892.82x = 57,420,346,808.42
  5. Step 5: Solve for x
    x = 57,420,346,808.42/298,892.82
  6. Step 6: Final answer
    x = 192,110.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.