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Finding the Fourth Proportional to 380,083.96, 570,130.26 and 99,629.56

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Solution

The fourth proportional to 380,083.96, 570,130.26 and 99,629.56 is: 149,445.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,083.96 : 570,130.26 = 99,629.56 : x
  2. Step 2: Convert to fraction form
    380,083.96/570,130.26 = 99,629.56/x
  3. Step 3: Cross multiply
    380,083.96x = 570,130.26 × 99,629.56
  4. Step 4: Simplify right side
    380,083.96x = 56,801,826,946.49
  5. Step 5: Solve for x
    x = 56,801,826,946.49/380,083.96
  6. Step 6: Final answer
    x = 149,445.47

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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.