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Finding the Fourth Proportional to 312,213.03, 430,855.25 and 168,973.04

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Solution

The fourth proportional to 312,213.03, 430,855.25 and 168,973.04 is: 233,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,213.03 : 430,855.25 = 168,973.04 : x
  2. Step 2: Convert to fraction form
    312,213.03/430,855.25 = 168,973.04/x
  3. Step 3: Cross multiply
    312,213.03x = 430,855.25 × 168,973.04
  4. Step 4: Simplify right side
    312,213.03x = 72,802,918,393.32
  5. Step 5: Solve for x
    x = 72,802,918,393.32/312,213.03
  6. Step 6: Final answer
    x = 233,183.47

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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.