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Finding the Fourth Proportional to 365,363.20, 548,044.80 and 128,972.80

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Solution

The fourth proportional to 365,363.20, 548,044.80 and 128,972.80 is: 193,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,363.20 : 548,044.80 = 128,972.80 : x
  2. Step 2: Convert to fraction form
    365,363.20/548,044.80 = 128,972.80/x
  3. Step 3: Cross multiply
    365,363.20x = 548,044.80 × 128,972.80
  4. Step 4: Simplify right side
    365,363.20x = 70,682,872,381.44
  5. Step 5: Solve for x
    x = 70,682,872,381.44/365,363.20
  6. Step 6: Final answer
    x = 193,459.20

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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.