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Finding the Fourth Proportional to 389,422.40, 584,133.60 and 164,708.15

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Solution

The fourth proportional to 389,422.40, 584,133.60 and 164,708.15 is: 247,062.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,422.40 : 584,133.60 = 164,708.15 : x
  2. Step 2: Convert to fraction form
    389,422.40/584,133.60 = 164,708.15/x
  3. Step 3: Cross multiply
    389,422.40x = 584,133.60 × 164,708.15
  4. Step 4: Simplify right side
    389,422.40x = 96,211,564,608.84
  5. Step 5: Solve for x
    x = 96,211,564,608.84/389,422.40
  6. Step 6: Final answer
    x = 247,062.23

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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.