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Finding the Fourth Proportional to 255,550.32, 352,660 and 142,377.12

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Solution

The fourth proportional to 255,550.32, 352,660 and 142,377.12 is: 196,480.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,550.32 : 352,660 = 142,377.12 : x
  2. Step 2: Convert to fraction form
    255,550.32/352,660 = 142,377.12/x
  3. Step 3: Cross multiply
    255,550.32x = 352,660 × 142,377.12
  4. Step 4: Simplify right side
    255,550.32x = 50,210,715,139.20
  5. Step 5: Solve for x
    x = 50,210,715,139.20/255,550.32
  6. Step 6: Final answer
    x = 196,480.74

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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.