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Finding the Fourth Proportional to 326,982, 490,472.34 and 90,323.98

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Solution

The fourth proportional to 326,982, 490,472.34 and 90,323.98 is: 135,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,982 : 490,472.34 = 90,323.98 : x
  2. Step 2: Convert to fraction form
    326,982/490,472.34 = 90,323.98/x
  3. Step 3: Cross multiply
    326,982x = 490,472.34 × 90,323.98
  4. Step 4: Simplify right side
    326,982x = 44,301,413,828.71
  5. Step 5: Solve for x
    x = 44,301,413,828.71/326,982
  6. Step 6: Final answer
    x = 135,485.79

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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.