Home / 280,017.48-386,410.10-159,142.80

Finding the Fourth Proportional to 280,017.48, 386,410.10 and 159,142.80

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Solution

The fourth proportional to 280,017.48, 386,410.10 and 159,142.80 is: 219,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,017.48 : 386,410.10 = 159,142.80 : x
  2. Step 2: Convert to fraction form
    280,017.48/386,410.10 = 159,142.80/x
  3. Step 3: Cross multiply
    280,017.48x = 386,410.10 × 159,142.80
  4. Step 4: Simplify right side
    280,017.48x = 61,494,385,262.28
  5. Step 5: Solve for x
    x = 61,494,385,262.28/280,017.48
  6. Step 6: Final answer
    x = 219,609.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.