Home / 221,215.12-305,284.04-125,716.24

Finding the Fourth Proportional to 221,215.12, 305,284.04 and 125,716.24

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Solution

The fourth proportional to 221,215.12, 305,284.04 and 125,716.24 is: 173,492.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,215.12 : 305,284.04 = 125,716.24 : x
  2. Step 2: Convert to fraction form
    221,215.12/305,284.04 = 125,716.24/x
  3. Step 3: Cross multiply
    221,215.12x = 305,284.04 × 125,716.24
  4. Step 4: Simplify right side
    221,215.12x = 38,379,161,640.81
  5. Step 5: Solve for x
    x = 38,379,161,640.81/221,215.12
  6. Step 6: Final answer
    x = 173,492.49

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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.