Home / 401,511.85-554,087.15-220,225.26

Finding the Fourth Proportional to 401,511.85, 554,087.15 and 220,225.26

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Solution

The fourth proportional to 401,511.85, 554,087.15 and 220,225.26 is: 303,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,511.85 : 554,087.15 = 220,225.26 : x
  2. Step 2: Convert to fraction form
    401,511.85/554,087.15 = 220,225.26/x
  3. Step 3: Cross multiply
    401,511.85x = 554,087.15 × 220,225.26
  4. Step 4: Simplify right side
    401,511.85x = 122,023,986,671.41
  5. Step 5: Solve for x
    x = 122,023,986,671.41/401,511.85
  6. Step 6: Final answer
    x = 303,911.30

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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.