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Finding the Fourth Proportional to 542,775.61, 749,119.98 and 301,136.05

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Solution

The fourth proportional to 542,775.61, 749,119.98 and 301,136.05 is: 415,617.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,775.61 : 749,119.98 = 301,136.05 : x
  2. Step 2: Convert to fraction form
    542,775.61/749,119.98 = 301,136.05/x
  3. Step 3: Cross multiply
    542,775.61x = 749,119.98 × 301,136.05
  4. Step 4: Simplify right side
    542,775.61x = 225,587,031,753.28
  5. Step 5: Solve for x
    x = 225,587,031,753.28/542,775.61
  6. Step 6: Final answer
    x = 415,617.48

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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.