Home / 365,623.18-548,433.66-128,908.78

Finding the Fourth Proportional to 365,623.18, 548,433.66 and 128,908.78

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Solution

The fourth proportional to 365,623.18, 548,433.66 and 128,908.78 is: 193,362.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,623.18 : 548,433.66 = 128,908.78 : x
  2. Step 2: Convert to fraction form
    365,623.18/548,433.66 = 128,908.78/x
  3. Step 3: Cross multiply
    365,623.18x = 548,433.66 × 128,908.78
  4. Step 4: Simplify right side
    365,623.18x = 70,697,914,021.53
  5. Step 5: Solve for x
    x = 70,697,914,021.53/365,623.18
  6. Step 6: Final answer
    x = 193,362.78

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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.