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Finding the Fourth Proportional to 255,092.80, 382,645.50 and 121,987.12

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Solution

The fourth proportional to 255,092.80, 382,645.50 and 121,987.12 is: 182,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,092.80 : 382,645.50 = 121,987.12 : x
  2. Step 2: Convert to fraction form
    255,092.80/382,645.50 = 121,987.12/x
  3. Step 3: Cross multiply
    255,092.80x = 382,645.50 × 121,987.12
  4. Step 4: Simplify right side
    255,092.80x = 46,677,822,525.96
  5. Step 5: Solve for x
    x = 46,677,822,525.96/255,092.80
  6. Step 6: Final answer
    x = 182,983.69

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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.