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Finding the Fourth Proportional to 389,429.40, 583,706.70 and 164,751.60

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Solution

The fourth proportional to 389,429.40, 583,706.70 and 164,751.60 is: 246,942.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,429.40 : 583,706.70 = 164,751.60 : x
  2. Step 2: Convert to fraction form
    389,429.40/583,706.70 = 164,751.60/x
  3. Step 3: Cross multiply
    389,429.40x = 583,706.70 × 164,751.60
  4. Step 4: Simplify right side
    389,429.40x = 96,166,612,755.72
  5. Step 5: Solve for x
    x = 96,166,612,755.72/389,429.40
  6. Step 6: Final answer
    x = 246,942.35

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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.