Home / 319,984.48-479,970.24-83,321.92

Finding the Fourth Proportional to 319,984.48, 479,970.24 and 83,321.92

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Solution

The fourth proportional to 319,984.48, 479,970.24 and 83,321.92 is: 124,981.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,984.48 : 479,970.24 = 83,321.92 : x
  2. Step 2: Convert to fraction form
    319,984.48/479,970.24 = 83,321.92/x
  3. Step 3: Cross multiply
    319,984.48x = 479,970.24 × 83,321.92
  4. Step 4: Simplify right side
    319,984.48x = 39,992,041,939.66
  5. Step 5: Solve for x
    x = 39,992,041,939.66/319,984.48
  6. Step 6: Final answer
    x = 124,981.19

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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.