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Finding the Fourth Proportional to 255,625.88, 352,764.40 and 153,709.70

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Solution

The fourth proportional to 255,625.88, 352,764.40 and 153,709.70 is: 212,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,625.88 : 352,764.40 = 153,709.70 : x
  2. Step 2: Convert to fraction form
    255,625.88/352,764.40 = 153,709.70/x
  3. Step 3: Cross multiply
    255,625.88x = 352,764.40 × 153,709.70
  4. Step 4: Simplify right side
    255,625.88x = 54,223,310,094.68
  5. Step 5: Solve for x
    x = 54,223,310,094.68/255,625.88
  6. Step 6: Final answer
    x = 212,119.80

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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.