Home / 319,979.64-479,997.02-83,322.75

Finding the Fourth Proportional to 319,979.64, 479,997.02 and 83,322.75

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Solution

The fourth proportional to 319,979.64, 479,997.02 and 83,322.75 is: 124,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,979.64 : 479,997.02 = 83,322.75 : x
  2. Step 2: Convert to fraction form
    319,979.64/479,997.02 = 83,322.75/x
  3. Step 3: Cross multiply
    319,979.64x = 479,997.02 × 83,322.75
  4. Step 4: Simplify right side
    319,979.64x = 39,994,668,881.61
  5. Step 5: Solve for x
    x = 39,994,668,881.61/319,979.64
  6. Step 6: Final answer
    x = 124,991.29

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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.