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Finding the Fourth Proportional to 405,136.60, 607,704.90 and 109,648.60

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Solution

The fourth proportional to 405,136.60, 607,704.90 and 109,648.60 is: 164,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,136.60 : 607,704.90 = 109,648.60 : x
  2. Step 2: Convert to fraction form
    405,136.60/607,704.90 = 109,648.60/x
  3. Step 3: Cross multiply
    405,136.60x = 607,704.90 × 109,648.60
  4. Step 4: Simplify right side
    405,136.60x = 66,633,991,498.14
  5. Step 5: Solve for x
    x = 66,633,991,498.14/405,136.60
  6. Step 6: Final answer
    x = 164,472.90

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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.