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Finding the Fourth Proportional to 255,955.44, 353,228.13 and 142,800.06

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Solution

The fourth proportional to 255,955.44, 353,228.13 and 142,800.06 is: 197,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,955.44 : 353,228.13 = 142,800.06 : x
  2. Step 2: Convert to fraction form
    255,955.44/353,228.13 = 142,800.06/x
  3. Step 3: Cross multiply
    255,955.44x = 353,228.13 × 142,800.06
  4. Step 4: Simplify right side
    255,955.44x = 50,440,998,157.69
  5. Step 5: Solve for x
    x = 50,440,998,157.69/255,955.44
  6. Step 6: Final answer
    x = 197,069.45

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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.