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Finding the Fourth Proportional to 318,749.70, 475,792.52 and 280,916.88

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Solution

The fourth proportional to 318,749.70, 475,792.52 and 280,916.88 is: 419,320.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,749.70 : 475,792.52 = 280,916.88 : x
  2. Step 2: Convert to fraction form
    318,749.70/475,792.52 = 280,916.88/x
  3. Step 3: Cross multiply
    318,749.70x = 475,792.52 × 280,916.88
  4. Step 4: Simplify right side
    318,749.70x = 133,658,150,245.74
  5. Step 5: Solve for x
    x = 133,658,150,245.74/318,749.70
  6. Step 6: Final answer
    x = 419,320.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.