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Finding the Fourth Proportional to 270,772.40, 405,870.60 and 130,439.60

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Solution

The fourth proportional to 270,772.40, 405,870.60 and 130,439.60 is: 195,520.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,772.40 : 405,870.60 = 130,439.60 : x
  2. Step 2: Convert to fraction form
    270,772.40/405,870.60 = 130,439.60/x
  3. Step 3: Cross multiply
    270,772.40x = 405,870.60 × 130,439.60
  4. Step 4: Simplify right side
    270,772.40x = 52,941,598,715.76
  5. Step 5: Solve for x
    x = 52,941,598,715.76/270,772.40
  6. Step 6: Final answer
    x = 195,520.66

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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.