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Finding the Fourth Proportional to 303,108.54, 454,530.93 and 86,919.66

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Solution

The fourth proportional to 303,108.54, 454,530.93 and 86,919.66 is: 130,341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,108.54 : 454,530.93 = 86,919.66 : x
  2. Step 2: Convert to fraction form
    303,108.54/454,530.93 = 86,919.66/x
  3. Step 3: Cross multiply
    303,108.54x = 454,530.93 × 86,919.66
  4. Step 4: Simplify right side
    303,108.54x = 39,507,673,895.08
  5. Step 5: Solve for x
    x = 39,507,673,895.08/303,108.54
  6. Step 6: Final answer
    x = 130,341.67

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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.