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Finding the Fourth Proportional to 539,275.50, 744,200.19 and 300,811.50

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Solution

The fourth proportional to 539,275.50, 744,200.19 and 300,811.50 is: 415,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,275.50 : 744,200.19 = 300,811.50 : x
  2. Step 2: Convert to fraction form
    539,275.50/744,200.19 = 300,811.50/x
  3. Step 3: Cross multiply
    539,275.50x = 744,200.19 × 300,811.50
  4. Step 4: Simplify right side
    539,275.50x = 223,863,975,454.19
  5. Step 5: Solve for x
    x = 223,863,975,454.19/539,275.50
  6. Step 6: Final answer
    x = 415,119.87

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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.