Home / 725,102.40-1,087,228.08-219,511.20

Finding the Fourth Proportional to 725,102.40, 1,087,228.08 and 219,511.20

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Solution

The fourth proportional to 725,102.40, 1,087,228.08 and 219,511.20 is: 329,137.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,102.40 : 1,087,228.08 = 219,511.20 : x
  2. Step 2: Convert to fraction form
    725,102.40/1,087,228.08 = 219,511.20/x
  3. Step 3: Cross multiply
    725,102.40x = 1,087,228.08 × 219,511.20
  4. Step 4: Simplify right side
    725,102.40x = 238,658,740,514.50
  5. Step 5: Solve for x
    x = 238,658,740,514.50/725,102.40
  6. Step 6: Final answer
    x = 329,137.98

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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.