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Finding the Fourth Proportional to 220,486.59, 304,313.75 and 124,993.66

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Solution

The fourth proportional to 220,486.59, 304,313.75 and 124,993.66 is: 172,515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,486.59 : 304,313.75 = 124,993.66 : x
  2. Step 2: Convert to fraction form
    220,486.59/304,313.75 = 124,993.66/x
  3. Step 3: Cross multiply
    220,486.59x = 304,313.75 × 124,993.66
  4. Step 4: Simplify right side
    220,486.59x = 38,037,289,400.83
  5. Step 5: Solve for x
    x = 38,037,289,400.83/220,486.59
  6. Step 6: Final answer
    x = 172,515.21

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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.