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Finding the Fourth Proportional to 397,455.80, 595,406.10 and 239,214.20

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Solution

The fourth proportional to 397,455.80, 595,406.10 and 239,214.20 is: 358,353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,455.80 : 595,406.10 = 239,214.20 : x
  2. Step 2: Convert to fraction form
    397,455.80/595,406.10 = 239,214.20/x
  3. Step 3: Cross multiply
    397,455.80x = 595,406.10 × 239,214.20
  4. Step 4: Simplify right side
    397,455.80x = 142,429,593,886.62
  5. Step 5: Solve for x
    x = 142,429,593,886.62/397,455.80
  6. Step 6: Final answer
    x = 358,353.29

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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.