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Finding the Fourth Proportional to 326,671.05, 490,009.07 and 90,026.71

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Solution

The fourth proportional to 326,671.05, 490,009.07 and 90,026.71 is: 135,040.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,671.05 : 490,009.07 = 90,026.71 : x
  2. Step 2: Convert to fraction form
    326,671.05/490,009.07 = 90,026.71/x
  3. Step 3: Cross multiply
    326,671.05x = 490,009.07 × 90,026.71
  4. Step 4: Simplify right side
    326,671.05x = 44,113,904,442.26
  5. Step 5: Solve for x
    x = 44,113,904,442.26/326,671.05
  6. Step 6: Final answer
    x = 135,040.75

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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.