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Finding the Fourth Proportional to 243,381.30, 365,113.35 and 74,897.79

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Solution

The fourth proportional to 243,381.30, 365,113.35 and 74,897.79 is: 112,359.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,381.30 : 365,113.35 = 74,897.79 : x
  2. Step 2: Convert to fraction form
    243,381.30/365,113.35 = 74,897.79/x
  3. Step 3: Cross multiply
    243,381.30x = 365,113.35 × 74,897.79
  4. Step 4: Simplify right side
    243,381.30x = 27,346,183,014.50
  5. Step 5: Solve for x
    x = 27,346,183,014.50/243,381.30
  6. Step 6: Final answer
    x = 112,359.43

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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.