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Finding the Fourth Proportional to 353,890.88, 530,753.76 and 203,812.16

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Solution

The fourth proportional to 353,890.88, 530,753.76 and 203,812.16 is: 305,670.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,890.88 : 530,753.76 = 203,812.16 : x
  2. Step 2: Convert to fraction form
    353,890.88/530,753.76 = 203,812.16/x
  3. Step 3: Cross multiply
    353,890.88x = 530,753.76 × 203,812.16
  4. Step 4: Simplify right side
    353,890.88x = 108,174,070,253.72
  5. Step 5: Solve for x
    x = 108,174,070,253.72/353,890.88
  6. Step 6: Final answer
    x = 305,670.69

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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.