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Finding the Fourth Proportional to 319,455.44, 478,479.14 and 264,053.85

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Solution

The fourth proportional to 319,455.44, 478,479.14 and 264,053.85 is: 395,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,455.44 : 478,479.14 = 264,053.85 : x
  2. Step 2: Convert to fraction form
    319,455.44/478,479.14 = 264,053.85/x
  3. Step 3: Cross multiply
    319,455.44x = 478,479.14 × 264,053.85
  4. Step 4: Simplify right side
    319,455.44x = 126,344,257,911.72
  5. Step 5: Solve for x
    x = 126,344,257,911.72/319,455.44
  6. Step 6: Final answer
    x = 395,498.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.