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Finding the Fourth Proportional to 326,998.49, 490,492.86 and 90,335.93

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Solution

The fourth proportional to 326,998.49, 490,492.86 and 90,335.93 is: 135,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,998.49 : 490,492.86 = 90,335.93 : x
  2. Step 2: Convert to fraction form
    326,998.49/490,492.86 = 90,335.93/x
  3. Step 3: Cross multiply
    326,998.49x = 490,492.86 × 90,335.93
  4. Step 4: Simplify right side
    326,998.49x = 44,309,126,214.00
  5. Step 5: Solve for x
    x = 44,309,126,214.00/326,998.49
  6. Step 6: Final answer
    x = 135,502.54

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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.