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Finding the Fourth Proportional to 389,998.80, 584,706.60 and 165,175.20

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Solution

The fourth proportional to 389,998.80, 584,706.60 and 165,175.20 is: 247,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,998.80 : 584,706.60 = 165,175.20 : x
  2. Step 2: Convert to fraction form
    389,998.80/584,706.60 = 165,175.20/x
  3. Step 3: Cross multiply
    389,998.80x = 584,706.60 × 165,175.20
  4. Step 4: Simplify right side
    389,998.80x = 96,579,029,596.32
  5. Step 5: Solve for x
    x = 96,579,029,596.32/389,998.80
  6. Step 6: Final answer
    x = 247,639.30

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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.