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Finding the Fourth Proportional to 522,129.85, 783,195.38 and 143,053.80

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Solution

The fourth proportional to 522,129.85, 783,195.38 and 143,053.80 is: 214,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,129.85 : 783,195.38 = 143,053.80 : x
  2. Step 2: Convert to fraction form
    522,129.85/783,195.38 = 143,053.80/x
  3. Step 3: Cross multiply
    522,129.85x = 783,195.38 × 143,053.80
  4. Step 4: Simplify right side
    522,129.85x = 112,039,072,135.64
  5. Step 5: Solve for x
    x = 112,039,072,135.64/522,129.85
  6. Step 6: Final answer
    x = 214,580.86

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Similar ratio
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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.