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Finding the Fourth Proportional to 312,399.38, 468,486.08 and 112,666.14

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Solution

The fourth proportional to 312,399.38, 468,486.08 and 112,666.14 is: 168,958.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,399.38 : 468,486.08 = 112,666.14 : x
  2. Step 2: Convert to fraction form
    312,399.38/468,486.08 = 112,666.14/x
  3. Step 3: Cross multiply
    312,399.38x = 468,486.08 × 112,666.14
  4. Step 4: Simplify right side
    312,399.38x = 52,782,518,136.50
  5. Step 5: Solve for x
    x = 52,782,518,136.50/312,399.38
  6. Step 6: Final answer
    x = 168,958.46

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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.