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Finding the Fourth Proportional to 318,697.80, 439,794.44 and 175,458.92

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Solution

The fourth proportional to 318,697.80, 439,794.44 and 175,458.92 is: 242,128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,697.80 : 439,794.44 = 175,458.92 : x
  2. Step 2: Convert to fraction form
    318,697.80/439,794.44 = 175,458.92/x
  3. Step 3: Cross multiply
    318,697.80x = 439,794.44 × 175,458.92
  4. Step 4: Simplify right side
    318,697.80x = 77,165,857,464.40
  5. Step 5: Solve for x
    x = 77,165,857,464.40/318,697.80
  6. Step 6: Final answer
    x = 242,128.62

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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.