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Finding the Fourth Proportional to 349,405, 523,684.66 and 248,043.60

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Solution

The fourth proportional to 349,405, 523,684.66 and 248,043.60 is: 371,765.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,405 : 523,684.66 = 248,043.60 : x
  2. Step 2: Convert to fraction form
    349,405/523,684.66 = 248,043.60/x
  3. Step 3: Cross multiply
    349,405x = 523,684.66 × 248,043.60
  4. Step 4: Simplify right side
    349,405x = 129,896,628,331.18
  5. Step 5: Solve for x
    x = 129,896,628,331.18/349,405
  6. Step 6: Final answer
    x = 371,765.22

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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.