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Finding the Fourth Proportional to 397,438.80, 595,953.40 and 147,992.40

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Solution

The fourth proportional to 397,438.80, 595,953.40 and 147,992.40 is: 221,912.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,438.80 : 595,953.40 = 147,992.40 : x
  2. Step 2: Convert to fraction form
    397,438.80/595,953.40 = 147,992.40/x
  3. Step 3: Cross multiply
    397,438.80x = 595,953.40 × 147,992.40
  4. Step 4: Simplify right side
    397,438.80x = 88,196,573,954.16
  5. Step 5: Solve for x
    x = 88,196,573,954.16/397,438.80
  6. Step 6: Final answer
    x = 221,912.34

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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.