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Finding the Fourth Proportional to 355,245.60, 532,868.40 and 309,626.40

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Solution

The fourth proportional to 355,245.60, 532,868.40 and 309,626.40 is: 464,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,245.60 : 532,868.40 = 309,626.40 : x
  2. Step 2: Convert to fraction form
    355,245.60/532,868.40 = 309,626.40/x
  3. Step 3: Cross multiply
    355,245.60x = 532,868.40 × 309,626.40
  4. Step 4: Simplify right side
    355,245.60x = 164,990,124,365.76
  5. Step 5: Solve for x
    x = 164,990,124,365.76/355,245.60
  6. Step 6: Final answer
    x = 464,439.60

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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.