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Finding the Fourth Proportional to 365,532.80, 548,299.20 and 128,899.40

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Solution

The fourth proportional to 365,532.80, 548,299.20 and 128,899.40 is: 193,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,532.80 : 548,299.20 = 128,899.40 : x
  2. Step 2: Convert to fraction form
    365,532.80/548,299.20 = 128,899.40/x
  3. Step 3: Cross multiply
    365,532.80x = 548,299.20 × 128,899.40
  4. Step 4: Simplify right side
    365,532.80x = 70,675,437,900.48
  5. Step 5: Solve for x
    x = 70,675,437,900.48/365,532.80
  6. Step 6: Final answer
    x = 193,349.10

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Similar ratio
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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.