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Finding the Fourth Proportional to 542,530.19, 748,733.97 and 300,859.85

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Solution

The fourth proportional to 542,530.19, 748,733.97 and 300,859.85 is: 415,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,530.19 : 748,733.97 = 300,859.85 : x
  2. Step 2: Convert to fraction form
    542,530.19/748,733.97 = 300,859.85/x
  3. Step 3: Cross multiply
    542,530.19x = 748,733.97 × 300,859.85
  4. Step 4: Simplify right side
    542,530.19x = 225,263,986,160.44
  5. Step 5: Solve for x
    x = 225,263,986,160.44/542,530.19
  6. Step 6: Final answer
    x = 415,210.05

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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.