Home / 384,899.14-531,172.41-215,128.90

Finding the Fourth Proportional to 384,899.14, 531,172.41 and 215,128.90

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Solution

The fourth proportional to 384,899.14, 531,172.41 and 215,128.90 is: 296,884.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,899.14 : 531,172.41 = 215,128.90 : x
  2. Step 2: Convert to fraction form
    384,899.14/531,172.41 = 215,128.90/x
  3. Step 3: Cross multiply
    384,899.14x = 531,172.41 × 215,128.90
  4. Step 4: Simplify right side
    384,899.14x = 114,270,536,273.65
  5. Step 5: Solve for x
    x = 114,270,536,273.65/384,899.14
  6. Step 6: Final answer
    x = 296,884.36

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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.