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Finding the Fourth Proportional to 315,622, 435,571.32 and 181,486

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Solution

The fourth proportional to 315,622, 435,571.32 and 181,486 is: 250,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,622 : 435,571.32 = 181,486 : x
  2. Step 2: Convert to fraction form
    315,622/435,571.32 = 181,486/x
  3. Step 3: Cross multiply
    315,622x = 435,571.32 × 181,486
  4. Step 4: Simplify right side
    315,622x = 79,050,096,581.52
  5. Step 5: Solve for x
    x = 79,050,096,581.52/315,622
  6. Step 6: Final answer
    x = 250,458.13

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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.