Home / 257,145.60-354,856.96-143,972.48

Finding the Fourth Proportional to 257,145.60, 354,856.96 and 143,972.48

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Solution

The fourth proportional to 257,145.60, 354,856.96 and 143,972.48 is: 198,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,145.60 : 354,856.96 = 143,972.48 : x
  2. Step 2: Convert to fraction form
    257,145.60/354,856.96 = 143,972.48/x
  3. Step 3: Cross multiply
    257,145.60x = 354,856.96 × 143,972.48
  4. Step 4: Simplify right side
    257,145.60x = 51,089,636,576.46
  5. Step 5: Solve for x
    x = 51,089,636,576.46/257,145.60
  6. Step 6: Final answer
    x = 198,679.80

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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.