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Finding the Fourth Proportional to 255,686.74, 352,848.09 and 142,507.06

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Solution

The fourth proportional to 255,686.74, 352,848.09 and 142,507.06 is: 196,659.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,686.74 : 352,848.09 = 142,507.06 : x
  2. Step 2: Convert to fraction form
    255,686.74/352,848.09 = 142,507.06/x
  3. Step 3: Cross multiply
    255,686.74x = 352,848.09 × 142,507.06
  4. Step 4: Simplify right side
    255,686.74x = 50,283,343,932.52
  5. Step 5: Solve for x
    x = 50,283,343,932.52/255,686.74
  6. Step 6: Final answer
    x = 196,659.96

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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.