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Finding the Fourth Proportional to 243,715.20, 365,580.28 and 66,225.96

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Solution

The fourth proportional to 243,715.20, 365,580.28 and 66,225.96 is: 99,340.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,715.20 : 365,580.28 = 66,225.96 : x
  2. Step 2: Convert to fraction form
    243,715.20/365,580.28 = 66,225.96/x
  3. Step 3: Cross multiply
    243,715.20x = 365,580.28 × 66,225.96
  4. Step 4: Simplify right side
    243,715.20x = 24,210,905,000.07
  5. Step 5: Solve for x
    x = 24,210,905,000.07/243,715.20
  6. Step 6: Final answer
    x = 99,340.97

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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.