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Finding the Fourth Proportional to 239,311.80, 358,967.70 and 126,948.60

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Solution

The fourth proportional to 239,311.80, 358,967.70 and 126,948.60 is: 190,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,311.80 : 358,967.70 = 126,948.60 : x
  2. Step 2: Convert to fraction form
    239,311.80/358,967.70 = 126,948.60/x
  3. Step 3: Cross multiply
    239,311.80x = 358,967.70 × 126,948.60
  4. Step 4: Simplify right side
    239,311.80x = 45,570,446,960.22
  5. Step 5: Solve for x
    x = 45,570,446,960.22/239,311.80
  6. Step 6: Final answer
    x = 190,422.90

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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.