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Finding the Fourth Proportional to 247,205.55, 370,820.48 and 129,107.55

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Solution

The fourth proportional to 247,205.55, 370,820.48 and 129,107.55 is: 193,667.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,205.55 : 370,820.48 = 129,107.55 : x
  2. Step 2: Convert to fraction form
    247,205.55/370,820.48 = 129,107.55/x
  3. Step 3: Cross multiply
    247,205.55x = 370,820.48 × 129,107.55
  4. Step 4: Simplify right side
    247,205.55x = 47,875,723,017.09
  5. Step 5: Solve for x
    x = 47,875,723,017.09/247,205.55
  6. Step 6: Final answer
    x = 193,667.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.