Home / 499,445.28-689,199.30-305,885.52

Finding the Fourth Proportional to 499,445.28, 689,199.30 and 305,885.52

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Solution

The fourth proportional to 499,445.28, 689,199.30 and 305,885.52 is: 422,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,445.28 : 689,199.30 = 305,885.52 : x
  2. Step 2: Convert to fraction form
    499,445.28/689,199.30 = 305,885.52/x
  3. Step 3: Cross multiply
    499,445.28x = 689,199.30 × 305,885.52
  4. Step 4: Simplify right side
    499,445.28x = 210,816,086,264.14
  5. Step 5: Solve for x
    x = 210,816,086,264.14/499,445.28
  6. Step 6: Final answer
    x = 422,100.47

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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.