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Finding the Fourth Proportional to 312,134.73, 430,744.55 and 168,897.30

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Solution

The fourth proportional to 312,134.73, 430,744.55 and 168,897.30 is: 233,077.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,134.73 : 430,744.55 = 168,897.30 : x
  2. Step 2: Convert to fraction form
    312,134.73/430,744.55 = 168,897.30/x
  3. Step 3: Cross multiply
    312,134.73x = 430,744.55 × 168,897.30
  4. Step 4: Simplify right side
    312,134.73x = 72,751,590,640.23
  5. Step 5: Solve for x
    x = 72,751,590,640.23/312,134.73
  6. Step 6: Final answer
    x = 233,077.53

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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.