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Finding the Fourth Proportional to 275,885.80, 413,828.70 and 163,911.40

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Solution

The fourth proportional to 275,885.80, 413,828.70 and 163,911.40 is: 245,867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,885.80 : 413,828.70 = 163,911.40 : x
  2. Step 2: Convert to fraction form
    275,885.80/413,828.70 = 163,911.40/x
  3. Step 3: Cross multiply
    275,885.80x = 413,828.70 × 163,911.40
  4. Step 4: Simplify right side
    275,885.80x = 67,831,241,577.18
  5. Step 5: Solve for x
    x = 67,831,241,577.18/275,885.80
  6. Step 6: Final answer
    x = 245,867.10

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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.