Home / 319,977.02-479,965.56-83,319.02

Finding the Fourth Proportional to 319,977.02, 479,965.56 and 83,319.02

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Solution

The fourth proportional to 319,977.02, 479,965.56 and 83,319.02 is: 124,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,977.02 : 479,965.56 = 83,319.02 : x
  2. Step 2: Convert to fraction form
    319,977.02/479,965.56 = 83,319.02/x
  3. Step 3: Cross multiply
    319,977.02x = 479,965.56 × 83,319.02
  4. Step 4: Simplify right side
    319,977.02x = 39,990,260,092.95
  5. Step 5: Solve for x
    x = 39,990,260,092.95/319,977.02
  6. Step 6: Final answer
    x = 124,978.54

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Similar ratio
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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.