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Finding the Fourth Proportional to 319,877.94, 479,817.48 and 83,220.24

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Solution

The fourth proportional to 319,877.94, 479,817.48 and 83,220.24 is: 124,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,877.94 : 479,817.48 = 83,220.24 : x
  2. Step 2: Convert to fraction form
    319,877.94/479,817.48 = 83,220.24/x
  3. Step 3: Cross multiply
    319,877.94x = 479,817.48 × 83,220.24
  4. Step 4: Simplify right side
    319,877.94x = 39,930,525,841.80
  5. Step 5: Solve for x
    x = 39,930,525,841.80/319,877.94
  6. Step 6: Final answer
    x = 124,830.51

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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.