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Finding the Fourth Proportional to 262,062.80, 392,998.20 and 84,616.40

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Solution

The fourth proportional to 262,062.80, 392,998.20 and 84,616.40 is: 126,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,062.80 : 392,998.20 = 84,616.40 : x
  2. Step 2: Convert to fraction form
    262,062.80/392,998.20 = 84,616.40/x
  3. Step 3: Cross multiply
    262,062.80x = 392,998.20 × 84,616.40
  4. Step 4: Simplify right side
    262,062.80x = 33,254,092,890.48
  5. Step 5: Solve for x
    x = 33,254,092,890.48/262,062.80
  6. Step 6: Final answer
    x = 126,893.60

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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.