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Finding the Fourth Proportional to 143,535.60, 215,278.56 and 43,671.60

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Solution

The fourth proportional to 143,535.60, 215,278.56 and 43,671.60 is: 65,499.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,535.60 : 215,278.56 = 43,671.60 : x
  2. Step 2: Convert to fraction form
    143,535.60/215,278.56 = 43,671.60/x
  3. Step 3: Cross multiply
    143,535.60x = 215,278.56 × 43,671.60
  4. Step 4: Simplify right side
    143,535.60x = 9,401,559,160.90
  5. Step 5: Solve for x
    x = 9,401,559,160.90/143,535.60
  6. Step 6: Final answer
    x = 65,499.84

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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.