Home / 208,385.51-312,578.26-75,265.25

Finding the Fourth Proportional to 208,385.51, 312,578.26 and 75,265.25

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Solution

The fourth proportional to 208,385.51, 312,578.26 and 75,265.25 is: 112,897.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,385.51 : 312,578.26 = 75,265.25 : x
  2. Step 2: Convert to fraction form
    208,385.51/312,578.26 = 75,265.25/x
  3. Step 3: Cross multiply
    208,385.51x = 312,578.26 × 75,265.25
  4. Step 4: Simplify right side
    208,385.51x = 23,526,279,132.41
  5. Step 5: Solve for x
    x = 23,526,279,132.41/208,385.51
  6. Step 6: Final answer
    x = 112,897.87

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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.