Home / 229,015.45-315,909.11-142,824.84

Finding the Fourth Proportional to 229,015.45, 315,909.11 and 142,824.84

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Solution

The fourth proportional to 229,015.45, 315,909.11 and 142,824.84 is: 197,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,015.45 : 315,909.11 = 142,824.84 : x
  2. Step 2: Convert to fraction form
    229,015.45/315,909.11 = 142,824.84/x
  3. Step 3: Cross multiply
    229,015.45x = 315,909.11 × 142,824.84
  4. Step 4: Simplify right side
    229,015.45x = 45,119,667,262.70
  5. Step 5: Solve for x
    x = 45,119,667,262.70/229,015.45
  6. Step 6: Final answer
    x = 197,015.82

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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.