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Finding the Fourth Proportional to 319,876.94, 479,815.98 and 83,219.24

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Solution

The fourth proportional to 319,876.94, 479,815.98 and 83,219.24 is: 124,829.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,876.94 : 479,815.98 = 83,219.24 : x
  2. Step 2: Convert to fraction form
    319,876.94/479,815.98 = 83,219.24/x
  3. Step 3: Cross multiply
    319,876.94x = 479,815.98 × 83,219.24
  4. Step 4: Simplify right side
    319,876.94x = 39,929,921,195.46
  5. Step 5: Solve for x
    x = 39,929,921,195.46/319,876.94
  6. Step 6: Final answer
    x = 124,829.01

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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.