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Finding the Fourth Proportional to 443,802.69, 665,507.19 and 275,316.21

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Solution

The fourth proportional to 443,802.69, 665,507.19 and 275,316.21 is: 412,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,802.69 : 665,507.19 = 275,316.21 : x
  2. Step 2: Convert to fraction form
    443,802.69/665,507.19 = 275,316.21/x
  3. Step 3: Cross multiply
    443,802.69x = 665,507.19 × 275,316.21
  4. Step 4: Simplify right side
    443,802.69x = 183,224,917,278.55
  5. Step 5: Solve for x
    x = 183,224,917,278.55/443,802.69
  6. Step 6: Final answer
    x = 412,852.20

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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.