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Finding the Fourth Proportional to 299,477.90, 449,281.38 and 86,244.35

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Solution

The fourth proportional to 299,477.90, 449,281.38 and 86,244.35 is: 129,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,477.90 : 449,281.38 = 86,244.35 : x
  2. Step 2: Convert to fraction form
    299,477.90/449,281.38 = 86,244.35/x
  3. Step 3: Cross multiply
    299,477.90x = 449,281.38 × 86,244.35
  4. Step 4: Simplify right side
    299,477.90x = 38,747,980,585.20
  5. Step 5: Solve for x
    x = 38,747,980,585.20/299,477.90
  6. Step 6: Final answer
    x = 129,385.11

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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.