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Finding the Fourth Proportional to 262,013.80, 393,020.70 and 84,526.60

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Solution

The fourth proportional to 262,013.80, 393,020.70 and 84,526.60 is: 126,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,013.80 : 393,020.70 = 84,526.60 : x
  2. Step 2: Convert to fraction form
    262,013.80/393,020.70 = 84,526.60/x
  3. Step 3: Cross multiply
    262,013.80x = 393,020.70 × 84,526.60
  4. Step 4: Simplify right side
    262,013.80x = 33,220,703,500.62
  5. Step 5: Solve for x
    x = 33,220,703,500.62/262,013.80
  6. Step 6: Final answer
    x = 126,789.90

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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.