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Finding the Fourth Proportional to 542,775.80, 749,120.30 and 301,136.19

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Solution

The fourth proportional to 542,775.80, 749,120.30 and 301,136.19 is: 415,617.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,775.80 : 749,120.30 = 301,136.19 : x
  2. Step 2: Convert to fraction form
    542,775.80/749,120.30 = 301,136.19/x
  3. Step 3: Cross multiply
    542,775.80x = 749,120.30 × 301,136.19
  4. Step 4: Simplify right side
    542,775.80x = 225,587,231,487.98
  5. Step 5: Solve for x
    x = 225,587,231,487.98/542,775.80
  6. Step 6: Final answer
    x = 415,617.71

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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.