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Finding the Fourth Proportional to 358,179.87, 494,243.37 and 242,145.87

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Solution

The fourth proportional to 358,179.87, 494,243.37 and 242,145.87 is: 334,130.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,179.87 : 494,243.37 = 242,145.87 : x
  2. Step 2: Convert to fraction form
    358,179.87/494,243.37 = 242,145.87/x
  3. Step 3: Cross multiply
    358,179.87x = 494,243.37 × 242,145.87
  4. Step 4: Simplify right side
    358,179.87x = 119,678,990,820.38
  5. Step 5: Solve for x
    x = 119,678,990,820.38/358,179.87
  6. Step 6: Final answer
    x = 334,130.98

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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.