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Finding the Fourth Proportional to 522,445.28, 783,664.49 and 143,336.36

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Solution

The fourth proportional to 522,445.28, 783,664.49 and 143,336.36 is: 215,003.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,445.28 : 783,664.49 = 143,336.36 : x
  2. Step 2: Convert to fraction form
    522,445.28/783,664.49 = 143,336.36/x
  3. Step 3: Cross multiply
    522,445.28x = 783,664.49 × 143,336.36
  4. Step 4: Simplify right side
    522,445.28x = 112,327,610,822.85
  5. Step 5: Solve for x
    x = 112,327,610,822.85/522,445.28
  6. Step 6: Final answer
    x = 215,003.59

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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.