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Finding the Fourth Proportional to 318,697.81, 439,794.43 and 175,458.92

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Solution

The fourth proportional to 318,697.81, 439,794.43 and 175,458.92 is: 242,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,697.81 : 439,794.43 = 175,458.92 : x
  2. Step 2: Convert to fraction form
    318,697.81/439,794.43 = 175,458.92/x
  3. Step 3: Cross multiply
    318,697.81x = 439,794.43 × 175,458.92
  4. Step 4: Simplify right side
    318,697.81x = 77,165,855,709.82
  5. Step 5: Solve for x
    x = 77,165,855,709.82/318,697.81
  6. Step 6: Final answer
    x = 242,128.60

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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.