Home / 209,311.20-313,966.80-125,330.40

Finding the Fourth Proportional to 209,311.20, 313,966.80 and 125,330.40

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Solution

The fourth proportional to 209,311.20, 313,966.80 and 125,330.40 is: 187,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,311.20 : 313,966.80 = 125,330.40 : x
  2. Step 2: Convert to fraction form
    209,311.20/313,966.80 = 125,330.40/x
  3. Step 3: Cross multiply
    209,311.20x = 313,966.80 × 125,330.40
  4. Step 4: Simplify right side
    209,311.20x = 39,349,584,630.72
  5. Step 5: Solve for x
    x = 39,349,584,630.72/209,311.20
  6. Step 6: Final answer
    x = 187,995.60

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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.