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Finding the Fourth Proportional to 402,756, 555,803.28 and 223,942.56

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Solution

The fourth proportional to 402,756, 555,803.28 and 223,942.56 is: 309,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,756 : 555,803.28 = 223,942.56 : x
  2. Step 2: Convert to fraction form
    402,756/555,803.28 = 223,942.56/x
  3. Step 3: Cross multiply
    402,756x = 555,803.28 × 223,942.56
  4. Step 4: Simplify right side
    402,756x = 124,468,009,379.60
  5. Step 5: Solve for x
    x = 124,468,009,379.60/402,756
  6. Step 6: Final answer
    x = 309,040.73

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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.