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Finding the Fourth Proportional to 469,940.31, 648,518.13 and 255,080.34

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Solution

The fourth proportional to 469,940.31, 648,518.13 and 255,080.34 is: 352,011.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,940.31 : 648,518.13 = 255,080.34 : x
  2. Step 2: Convert to fraction form
    469,940.31/648,518.13 = 255,080.34/x
  3. Step 3: Cross multiply
    469,940.31x = 648,518.13 × 255,080.34
  4. Step 4: Simplify right side
    469,940.31x = 165,424,225,096.56
  5. Step 5: Solve for x
    x = 165,424,225,096.56/469,940.31
  6. Step 6: Final answer
    x = 352,011.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.