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Finding the Fourth Proportional to 268,068.72, 399,164.84 and 258,489.66

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Solution

The fourth proportional to 268,068.72, 399,164.84 and 258,489.66 is: 384,901.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,068.72 : 399,164.84 = 258,489.66 : x
  2. Step 2: Convert to fraction form
    268,068.72/399,164.84 = 258,489.66/x
  3. Step 3: Cross multiply
    268,068.72x = 399,164.84 × 258,489.66
  4. Step 4: Simplify right side
    268,068.72x = 103,179,982,483.11
  5. Step 5: Solve for x
    x = 103,179,982,483.11/268,068.72
  6. Step 6: Final answer
    x = 384,901.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.