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Finding the Fourth Proportional to 313,338.39, 469,962.50 and 100,130.60

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Solution

The fourth proportional to 313,338.39, 469,962.50 and 100,130.60 is: 150,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,338.39 : 469,962.50 = 100,130.60 : x
  2. Step 2: Convert to fraction form
    313,338.39/469,962.50 = 100,130.60/x
  3. Step 3: Cross multiply
    313,338.39x = 469,962.50 × 100,130.60
  4. Step 4: Simplify right side
    313,338.39x = 47,057,624,252.03
  5. Step 5: Solve for x
    x = 47,057,624,252.03/313,338.39
  6. Step 6: Final answer
    x = 150,181.48

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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.