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Finding the Fourth Proportional to 570,106.53, 855,023.72 and 170,640.05

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Solution

The fourth proportional to 570,106.53, 855,023.72 and 170,640.05 is: 255,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,106.53 : 855,023.72 = 170,640.05 : x
  2. Step 2: Convert to fraction form
    570,106.53/855,023.72 = 170,640.05/x
  3. Step 3: Cross multiply
    570,106.53x = 855,023.72 × 170,640.05
  4. Step 4: Simplify right side
    570,106.53x = 145,901,285,203.67
  5. Step 5: Solve for x
    x = 145,901,285,203.67/570,106.53
  6. Step 6: Final answer
    x = 255,919.34

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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.