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Finding the Fourth Proportional to 570,725.40, 855,835.56 and 171,289.38

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Solution

The fourth proportional to 570,725.40, 855,835.56 and 171,289.38 is: 256,858.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,725.40 : 855,835.56 = 171,289.38 : x
  2. Step 2: Convert to fraction form
    570,725.40/855,835.56 = 171,289.38/x
  3. Step 3: Cross multiply
    570,725.40x = 855,835.56 × 171,289.38
  4. Step 4: Simplify right side
    570,725.40x = 146,595,542,454.35
  5. Step 5: Solve for x
    x = 146,595,542,454.35/570,725.40
  6. Step 6: Final answer
    x = 256,858.28

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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.