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Finding the Fourth Proportional to 255,990.24, 384,255.90 and 143,766.36

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Solution

The fourth proportional to 255,990.24, 384,255.90 and 143,766.36 is: 215,801.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,990.24 : 384,255.90 = 143,766.36 : x
  2. Step 2: Convert to fraction form
    255,990.24/384,255.90 = 143,766.36/x
  3. Step 3: Cross multiply
    255,990.24x = 384,255.90 × 143,766.36
  4. Step 4: Simplify right side
    255,990.24x = 55,243,072,051.52
  5. Step 5: Solve for x
    x = 55,243,072,051.52/255,990.24
  6. Step 6: Final answer
    x = 215,801.48

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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.