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Finding the Fourth Proportional to 365,416.40, 548,369.40 and 128,759.60

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Solution

The fourth proportional to 365,416.40, 548,369.40 and 128,759.60 is: 193,225.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,416.40 : 548,369.40 = 128,759.60 : x
  2. Step 2: Convert to fraction form
    365,416.40/548,369.40 = 128,759.60/x
  3. Step 3: Cross multiply
    365,416.40x = 548,369.40 × 128,759.60
  4. Step 4: Simplify right side
    365,416.40x = 70,607,824,596.24
  5. Step 5: Solve for x
    x = 70,607,824,596.24/365,416.40
  6. Step 6: Final answer
    x = 193,225.66

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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.