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Finding the Fourth Proportional to 443,878.12, 665,678.94 and 148,321

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Solution

The fourth proportional to 443,878.12, 665,678.94 and 148,321 is: 222,435.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,878.12 : 665,678.94 = 148,321 : x
  2. Step 2: Convert to fraction form
    443,878.12/665,678.94 = 148,321/x
  3. Step 3: Cross multiply
    443,878.12x = 665,678.94 × 148,321
  4. Step 4: Simplify right side
    443,878.12x = 98,734,166,059.74
  5. Step 5: Solve for x
    x = 98,734,166,059.74/443,878.12
  6. Step 6: Final answer
    x = 222,435.31

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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.