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Finding the Fourth Proportional to 312,174.77, 430,804.22 and 168,937.79

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Solution

The fourth proportional to 312,174.77, 430,804.22 and 168,937.79 is: 233,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,174.77 : 430,804.22 = 168,937.79 : x
  2. Step 2: Convert to fraction form
    312,174.77/430,804.22 = 168,937.79/x
  3. Step 3: Cross multiply
    312,174.77x = 430,804.22 × 168,937.79
  4. Step 4: Simplify right side
    312,174.77x = 72,779,109,850.76
  5. Step 5: Solve for x
    x = 72,779,109,850.76/312,174.77
  6. Step 6: Final answer
    x = 233,135.79

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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.