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Finding the Fourth Proportional to 397,447.80, 595,966.90 and 148,001.40

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Solution

The fourth proportional to 397,447.80, 595,966.90 and 148,001.40 is: 221,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,447.80 : 595,966.90 = 148,001.40 : x
  2. Step 2: Convert to fraction form
    397,447.80/595,966.90 = 148,001.40/x
  3. Step 3: Cross multiply
    397,447.80x = 595,966.90 × 148,001.40
  4. Step 4: Simplify right side
    397,447.80x = 88,203,935,553.66
  5. Step 5: Solve for x
    x = 88,203,935,553.66/397,447.80
  6. Step 6: Final answer
    x = 221,925.84

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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.