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Finding the Fourth Proportional to 315,309.45, 435,136.65 and 179,363.10

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Solution

The fourth proportional to 315,309.45, 435,136.65 and 179,363.10 is: 247,526.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,309.45 : 435,136.65 = 179,363.10 : x
  2. Step 2: Convert to fraction form
    315,309.45/435,136.65 = 179,363.10/x
  3. Step 3: Cross multiply
    315,309.45x = 435,136.65 × 179,363.10
  4. Step 4: Simplify right side
    315,309.45x = 78,047,458,467.62
  5. Step 5: Solve for x
    x = 78,047,458,467.62/315,309.45
  6. Step 6: Final answer
    x = 247,526.54

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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.