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Finding the Fourth Proportional to 315,305.86, 435,136.27 and 177,532.22

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Solution

The fourth proportional to 315,305.86, 435,136.27 and 177,532.22 is: 245,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,305.86 : 435,136.27 = 177,532.22 : x
  2. Step 2: Convert to fraction form
    315,305.86/435,136.27 = 177,532.22/x
  3. Step 3: Cross multiply
    315,305.86x = 435,136.27 × 177,532.22
  4. Step 4: Simplify right side
    315,305.86x = 77,250,708,015.62
  5. Step 5: Solve for x
    x = 77,250,708,015.62/315,305.86
  6. Step 6: Final answer
    x = 245,002.45

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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.