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Finding the Fourth Proportional to 542,838.98, 749,121.18 and 301,136.87

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Solution

The fourth proportional to 542,838.98, 749,121.18 and 301,136.87 is: 415,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,838.98 : 749,121.18 = 301,136.87 : x
  2. Step 2: Convert to fraction form
    542,838.98/749,121.18 = 301,136.87/x
  3. Step 3: Cross multiply
    542,838.98x = 749,121.18 × 301,136.87
  4. Step 4: Simplify right side
    542,838.98x = 225,588,008,139.45
  5. Step 5: Solve for x
    x = 225,588,008,139.45/542,838.98
  6. Step 6: Final answer
    x = 415,570.76

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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.