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Finding the Fourth Proportional to 255,570.80, 352,690.14 and 140,853.60

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Solution

The fourth proportional to 255,570.80, 352,690.14 and 140,853.60 is: 194,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,570.80 : 352,690.14 = 140,853.60 : x
  2. Step 2: Convert to fraction form
    255,570.80/352,690.14 = 140,853.60/x
  3. Step 3: Cross multiply
    255,570.80x = 352,690.14 × 140,853.60
  4. Step 4: Simplify right side
    255,570.80x = 49,677,675,903.50
  5. Step 5: Solve for x
    x = 49,677,675,903.50/255,570.80
  6. Step 6: Final answer
    x = 194,379.31

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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.