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Finding the Fourth Proportional to 355,868.72, 533,861.40 and 168,778.16

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Solution

The fourth proportional to 355,868.72, 533,861.40 and 168,778.16 is: 253,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,868.72 : 533,861.40 = 168,778.16 : x
  2. Step 2: Convert to fraction form
    355,868.72/533,861.40 = 168,778.16/x
  3. Step 3: Cross multiply
    355,868.72x = 533,861.40 × 168,778.16
  4. Step 4: Simplify right side
    355,868.72x = 90,104,144,787.02
  5. Step 5: Solve for x
    x = 90,104,144,787.02/355,868.72
  6. Step 6: Final answer
    x = 253,194.90

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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.