Home / 827,142.80-1,240,714.20-228,196.40

Finding the Fourth Proportional to 827,142.80, 1,240,714.20 and 228,196.40

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Solution

The fourth proportional to 827,142.80, 1,240,714.20 and 228,196.40 is: 342,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,142.80 : 1,240,714.20 = 228,196.40 : x
  2. Step 2: Convert to fraction form
    827,142.80/1,240,714.20 = 228,196.40/x
  3. Step 3: Cross multiply
    827,142.80x = 1,240,714.20 × 228,196.40
  4. Step 4: Simplify right side
    827,142.80x = 283,126,513,868.88
  5. Step 5: Solve for x
    x = 283,126,513,868.88/827,142.80
  6. Step 6: Final answer
    x = 342,294.60

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Double scale
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Similar ratio
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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.