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Finding the Fourth Proportional to 312,576.81, 431,354.61 and 169,337.22

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Solution

The fourth proportional to 312,576.81, 431,354.61 and 169,337.22 is: 233,684.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,576.81 : 431,354.61 = 169,337.22 : x
  2. Step 2: Convert to fraction form
    312,576.81/431,354.61 = 169,337.22/x
  3. Step 3: Cross multiply
    312,576.81x = 431,354.61 × 169,337.22
  4. Step 4: Simplify right side
    312,576.81x = 73,044,390,491.58
  5. Step 5: Solve for x
    x = 73,044,390,491.58/312,576.81
  6. Step 6: Final answer
    x = 233,684.61

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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.