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Finding the Fourth Proportional to 263,116.40, 394,415.40 and 130,017.20

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Solution

The fourth proportional to 263,116.40, 394,415.40 and 130,017.20 is: 194,897.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,116.40 : 394,415.40 = 130,017.20 : x
  2. Step 2: Convert to fraction form
    263,116.40/394,415.40 = 130,017.20/x
  3. Step 3: Cross multiply
    263,116.40x = 394,415.40 × 130,017.20
  4. Step 4: Simplify right side
    263,116.40x = 51,280,785,944.88
  5. Step 5: Solve for x
    x = 51,280,785,944.88/263,116.40
  6. Step 6: Final answer
    x = 194,897.72

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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.