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Finding the Fourth Proportional to 542,091.48, 748,090.67 and 300,378.09

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Solution

The fourth proportional to 542,091.48, 748,090.67 and 300,378.09 is: 414,524.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,091.48 : 748,090.67 = 300,378.09 : x
  2. Step 2: Convert to fraction form
    542,091.48/748,090.67 = 300,378.09/x
  3. Step 3: Cross multiply
    542,091.48x = 748,090.67 × 300,378.09
  4. Step 4: Simplify right side
    542,091.48x = 224,710,046,601.42
  5. Step 5: Solve for x
    x = 224,710,046,601.42/542,091.48
  6. Step 6: Final answer
    x = 414,524.22

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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.