Home / 221,311.59-305,430.12-125,818.06

Finding the Fourth Proportional to 221,311.59, 305,430.12 and 125,818.06

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Solution

The fourth proportional to 221,311.59, 305,430.12 and 125,818.06 is: 173,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,311.59 : 305,430.12 = 125,818.06 : x
  2. Step 2: Convert to fraction form
    221,311.59/305,430.12 = 125,818.06/x
  3. Step 3: Cross multiply
    221,311.59x = 305,430.12 × 125,818.06
  4. Step 4: Simplify right side
    221,311.59x = 38,428,624,619.21
  5. Step 5: Solve for x
    x = 38,428,624,619.21/221,311.59
  6. Step 6: Final answer
    x = 173,640.36

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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.