Home / 397,964.28-596,985.72-128,123.32

Finding the Fourth Proportional to 397,964.28, 596,985.72 and 128,123.32

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Solution

The fourth proportional to 397,964.28, 596,985.72 and 128,123.32 is: 192,197.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,964.28 : 596,985.72 = 128,123.32 : x
  2. Step 2: Convert to fraction form
    397,964.28/596,985.72 = 128,123.32/x
  3. Step 3: Cross multiply
    397,964.28x = 596,985.72 × 128,123.32
  4. Step 4: Simplify right side
    397,964.28x = 76,487,792,438.99
  5. Step 5: Solve for x
    x = 76,487,792,438.99/397,964.28
  6. Step 6: Final answer
    x = 192,197.63

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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.