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Finding the Fourth Proportional to 255,326.31, 352,328.54 and 142,159.59

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Solution

The fourth proportional to 255,326.31, 352,328.54 and 142,159.59 is: 196,168.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,326.31 : 352,328.54 = 142,159.59 : x
  2. Step 2: Convert to fraction form
    255,326.31/352,328.54 = 142,159.59/x
  3. Step 3: Cross multiply
    255,326.31x = 352,328.54 × 142,159.59
  4. Step 4: Simplify right side
    255,326.31x = 50,086,880,080.90
  5. Step 5: Solve for x
    x = 50,086,880,080.90/255,326.31
  6. Step 6: Final answer
    x = 196,168.11

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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.