Home / 388,728.21-536,463.09-227,635.14

Finding the Fourth Proportional to 388,728.21, 536,463.09 and 227,635.14

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Solution

The fourth proportional to 388,728.21, 536,463.09 and 227,635.14 is: 314,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,728.21 : 536,463.09 = 227,635.14 : x
  2. Step 2: Convert to fraction form
    388,728.21/536,463.09 = 227,635.14/x
  3. Step 3: Cross multiply
    388,728.21x = 536,463.09 × 227,635.14
  4. Step 4: Simplify right side
    388,728.21x = 122,117,850,596.98
  5. Step 5: Solve for x
    x = 122,117,850,596.98/388,728.21
  6. Step 6: Final answer
    x = 314,147.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.