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Finding the Fourth Proportional to 326,019.83, 488,988.15 and 126,203.49

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Solution

The fourth proportional to 326,019.83, 488,988.15 and 126,203.49 is: 189,289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,019.83 : 488,988.15 = 126,203.49 : x
  2. Step 2: Convert to fraction form
    326,019.83/488,988.15 = 126,203.49/x
  3. Step 3: Cross multiply
    326,019.83x = 488,988.15 × 126,203.49
  4. Step 4: Simplify right side
    326,019.83x = 61,712,011,098.64
  5. Step 5: Solve for x
    x = 61,712,011,098.64/326,019.83
  6. Step 6: Final answer
    x = 189,289.14

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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.