Home / 319,877.18-479,816.38-83,219.48

Finding the Fourth Proportional to 319,877.18, 479,816.38 and 83,219.48

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Solution

The fourth proportional to 319,877.18, 479,816.38 and 83,219.48 is: 124,829.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,877.18 : 479,816.38 = 83,219.48 : x
  2. Step 2: Convert to fraction form
    319,877.18/479,816.38 = 83,219.48/x
  3. Step 3: Cross multiply
    319,877.18x = 479,816.38 × 83,219.48
  4. Step 4: Simplify right side
    319,877.18x = 39,930,069,639.08
  5. Step 5: Solve for x
    x = 39,930,069,639.08/319,877.18
  6. Step 6: Final answer
    x = 124,829.38

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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.