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Finding the Fourth Proportional to 331,424.60, 497,136.90 and 305,763.80

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Solution

The fourth proportional to 331,424.60, 497,136.90 and 305,763.80 is: 458,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,424.60 : 497,136.90 = 305,763.80 : x
  2. Step 2: Convert to fraction form
    331,424.60/497,136.90 = 305,763.80/x
  3. Step 3: Cross multiply
    331,424.60x = 497,136.90 × 305,763.80
  4. Step 4: Simplify right side
    331,424.60x = 152,006,467,664.22
  5. Step 5: Solve for x
    x = 152,006,467,664.22/331,424.60
  6. Step 6: Final answer
    x = 458,645.70

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1.5x scale

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.