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Finding the Fourth Proportional to 312,316.36, 468,404.37 and 143,674.63

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Solution

The fourth proportional to 312,316.36, 468,404.37 and 143,674.63 is: 215,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,316.36 : 468,404.37 = 143,674.63 : x
  2. Step 2: Convert to fraction form
    312,316.36/468,404.37 = 143,674.63/x
  3. Step 3: Cross multiply
    312,316.36x = 468,404.37 × 143,674.63
  4. Step 4: Simplify right side
    312,316.36x = 67,297,823,379.12
  5. Step 5: Solve for x
    x = 67,297,823,379.12/312,316.36
  6. Step 6: Final answer
    x = 215,479.66

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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.