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Finding the Fourth Proportional to 542,081.36, 748,071.55 and 300,379.59

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Solution

The fourth proportional to 542,081.36, 748,071.55 and 300,379.59 is: 414,523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,081.36 : 748,071.55 = 300,379.59 : x
  2. Step 2: Convert to fraction form
    542,081.36/748,071.55 = 300,379.59/x
  3. Step 3: Cross multiply
    542,081.36x = 748,071.55 × 300,379.59
  4. Step 4: Simplify right side
    542,081.36x = 224,705,425,855.14
  5. Step 5: Solve for x
    x = 224,705,425,855.14/542,081.36
  6. Step 6: Final answer
    x = 414,523.43

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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.