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Finding the Fourth Proportional to 220,570.83, 304,334.69 and 129,919.68

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Solution

The fourth proportional to 220,570.83, 304,334.69 and 129,919.68 is: 179,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,570.83 : 304,334.69 = 129,919.68 : x
  2. Step 2: Convert to fraction form
    220,570.83/304,334.69 = 129,919.68/x
  3. Step 3: Cross multiply
    220,570.83x = 304,334.69 × 129,919.68
  4. Step 4: Simplify right side
    220,570.83x = 39,539,064,888.10
  5. Step 5: Solve for x
    x = 39,539,064,888.10/220,570.83
  6. Step 6: Final answer
    x = 179,257.90

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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.