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Finding the Fourth Proportional to 365,529.80, 548,294.70 and 128,896.40

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Solution

The fourth proportional to 365,529.80, 548,294.70 and 128,896.40 is: 193,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,529.80 : 548,294.70 = 128,896.40 : x
  2. Step 2: Convert to fraction form
    365,529.80/548,294.70 = 128,896.40/x
  3. Step 3: Cross multiply
    365,529.80x = 548,294.70 × 128,896.40
  4. Step 4: Simplify right side
    365,529.80x = 70,673,212,969.08
  5. Step 5: Solve for x
    x = 70,673,212,969.08/365,529.80
  6. Step 6: Final answer
    x = 193,344.60

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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.