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Finding the Fourth Proportional to 443,457.72, 665,292.50 and 143,939.16

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Solution

The fourth proportional to 443,457.72, 665,292.50 and 143,939.16 is: 215,943.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,457.72 : 665,292.50 = 143,939.16 : x
  2. Step 2: Convert to fraction form
    443,457.72/665,292.50 = 143,939.16/x
  3. Step 3: Cross multiply
    443,457.72x = 665,292.50 × 143,939.16
  4. Step 4: Simplify right side
    443,457.72x = 95,761,642,884.60
  5. Step 5: Solve for x
    x = 95,761,642,884.60/443,457.72
  6. Step 6: Final answer
    x = 215,943.12

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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.