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Finding the Fourth Proportional to 320,417.33, 480,653.33 and 83,759.63

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Solution

The fourth proportional to 320,417.33, 480,653.33 and 83,759.63 is: 125,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,417.33 : 480,653.33 = 83,759.63 : x
  2. Step 2: Convert to fraction form
    320,417.33/480,653.33 = 83,759.63/x
  3. Step 3: Cross multiply
    320,417.33x = 480,653.33 × 83,759.63
  4. Step 4: Simplify right side
    320,417.33x = 40,259,342,257.00
  5. Step 5: Solve for x
    x = 40,259,342,257.00/320,417.33
  6. Step 6: Final answer
    x = 125,646.58

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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.