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Finding the Fourth Proportional to 312,777.29, 431,633.59 and 169,537.91

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Solution

The fourth proportional to 312,777.29, 431,633.59 and 169,537.91 is: 233,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,777.29 : 431,633.59 = 169,537.91 : x
  2. Step 2: Convert to fraction form
    312,777.29/431,633.59 = 169,537.91/x
  3. Step 3: Cross multiply
    312,777.29x = 431,633.59 × 169,537.91
  4. Step 4: Simplify right side
    312,777.29x = 73,178,254,152.38
  5. Step 5: Solve for x
    x = 73,178,254,152.38/312,777.29
  6. Step 6: Final answer
    x = 233,962.81

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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.