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Finding the Fourth Proportional to 405,748.72, 608,622.60 and 156,255.76

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Solution

The fourth proportional to 405,748.72, 608,622.60 and 156,255.76 is: 234,383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,748.72 : 608,622.60 = 156,255.76 : x
  2. Step 2: Convert to fraction form
    405,748.72/608,622.60 = 156,255.76/x
  3. Step 3: Cross multiply
    405,748.72x = 608,622.60 × 156,255.76
  4. Step 4: Simplify right side
    405,748.72x = 95,100,786,916.18
  5. Step 5: Solve for x
    x = 95,100,786,916.18/405,748.72
  6. Step 6: Final answer
    x = 234,383.46

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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.