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Finding the Fourth Proportional to 449,065.66, 619,728.88 and 245,130.34

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Solution

The fourth proportional to 449,065.66, 619,728.88 and 245,130.34 is: 338,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,065.66 : 619,728.88 = 245,130.34 : x
  2. Step 2: Convert to fraction form
    449,065.66/619,728.88 = 245,130.34/x
  3. Step 3: Cross multiply
    449,065.66x = 619,728.88 × 245,130.34
  4. Step 4: Simplify right side
    449,065.66x = 151,914,347,963.58
  5. Step 5: Solve for x
    x = 151,914,347,963.58/449,065.66
  6. Step 6: Final answer
    x = 338,289.84

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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.