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Finding the Fourth Proportional to 255,490.64, 352,587.96 and 142,313.44

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Solution

The fourth proportional to 255,490.64, 352,587.96 and 142,313.44 is: 196,398.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,490.64 : 352,587.96 = 142,313.44 : x
  2. Step 2: Convert to fraction form
    255,490.64/352,587.96 = 142,313.44/x
  3. Step 3: Cross multiply
    255,490.64x = 352,587.96 × 142,313.44
  4. Step 4: Simplify right side
    255,490.64x = 50,178,005,490.18
  5. Step 5: Solve for x
    x = 50,178,005,490.18/255,490.64
  6. Step 6: Final answer
    x = 196,398.61

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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.