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Finding the Fourth Proportional to 143,505.84, 215,259.24 and 43,666.80

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Solution

The fourth proportional to 143,505.84, 215,259.24 and 43,666.80 is: 65,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,505.84 : 215,259.24 = 43,666.80 : x
  2. Step 2: Convert to fraction form
    143,505.84/215,259.24 = 43,666.80/x
  3. Step 3: Cross multiply
    143,505.84x = 215,259.24 × 43,666.80
  4. Step 4: Simplify right side
    143,505.84x = 9,399,682,181.23
  5. Step 5: Solve for x
    x = 9,399,682,181.23/143,505.84
  6. Step 6: Final answer
    x = 65,500.35

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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.