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Finding the Fourth Proportional to 402,181.85, 555,017.63 and 220,910.54

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Solution

The fourth proportional to 402,181.85, 555,017.63 and 220,910.54 is: 304,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,181.85 : 555,017.63 = 220,910.54 : x
  2. Step 2: Convert to fraction form
    402,181.85/555,017.63 = 220,910.54/x
  3. Step 3: Cross multiply
    402,181.85x = 555,017.63 × 220,910.54
  4. Step 4: Simplify right side
    402,181.85x = 122,609,240,473.18
  5. Step 5: Solve for x
    x = 122,609,240,473.18/402,181.85
  6. Step 6: Final answer
    x = 304,860.20

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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.