Home / 311,111.28-429,365.76-190,332.96

Finding the Fourth Proportional to 311,111.28, 429,365.76 and 190,332.96

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Solution

The fourth proportional to 311,111.28, 429,365.76 and 190,332.96 is: 262,679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,111.28 : 429,365.76 = 190,332.96 : x
  2. Step 2: Convert to fraction form
    311,111.28/429,365.76 = 190,332.96/x
  3. Step 3: Cross multiply
    311,111.28x = 429,365.76 × 190,332.96
  4. Step 4: Simplify right side
    311,111.28x = 81,722,456,023.45
  5. Step 5: Solve for x
    x = 81,722,456,023.45/311,111.28
  6. Step 6: Final answer
    x = 262,679.18

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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.