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Finding the Fourth Proportional to 570,516.21, 855,916.47 and 171,164.34

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Solution

The fourth proportional to 570,516.21, 855,916.47 and 171,164.34 is: 256,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,516.21 : 855,916.47 = 171,164.34 : x
  2. Step 2: Convert to fraction form
    570,516.21/855,916.47 = 171,164.34/x
  3. Step 3: Cross multiply
    570,516.21x = 855,916.47 × 171,164.34
  4. Step 4: Simplify right side
    570,516.21x = 146,502,377,682.68
  5. Step 5: Solve for x
    x = 146,502,377,682.68/570,516.21
  6. Step 6: Final answer
    x = 256,789.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.