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Finding the Fourth Proportional to 315,321.05, 435,153.23 and 179,351.51

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Solution

The fourth proportional to 315,321.05, 435,153.23 and 179,351.51 is: 247,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,321.05 : 435,153.23 = 179,351.51 : x
  2. Step 2: Convert to fraction form
    315,321.05/435,153.23 = 179,351.51/x
  3. Step 3: Cross multiply
    315,321.05x = 435,153.23 × 179,351.51
  4. Step 4: Simplify right side
    315,321.05x = 78,045,387,154.49
  5. Step 5: Solve for x
    x = 78,045,387,154.49/315,321.05
  6. Step 6: Final answer
    x = 247,510.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.