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Finding the Fourth Proportional to 255,017.54, 351,919.30 and 140,289.48

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Solution

The fourth proportional to 255,017.54, 351,919.30 and 140,289.48 is: 193,596.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,017.54 : 351,919.30 = 140,289.48 : x
  2. Step 2: Convert to fraction form
    255,017.54/351,919.30 = 140,289.48/x
  3. Step 3: Cross multiply
    255,017.54x = 351,919.30 × 140,289.48
  4. Step 4: Simplify right side
    255,017.54x = 49,370,575,598.96
  5. Step 5: Solve for x
    x = 49,370,575,598.96/255,017.54
  6. Step 6: Final answer
    x = 193,596.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.