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Finding the Fourth Proportional to 570,342.72, 855,273.12 and 171,040.32

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Solution

The fourth proportional to 570,342.72, 855,273.12 and 171,040.32 is: 256,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,342.72 : 855,273.12 = 171,040.32 : x
  2. Step 2: Convert to fraction form
    570,342.72/855,273.12 = 171,040.32/x
  3. Step 3: Cross multiply
    570,342.72x = 855,273.12 × 171,040.32
  4. Step 4: Simplify right side
    570,342.72x = 146,286,188,132.20
  5. Step 5: Solve for x
    x = 146,286,188,132.20/570,342.72
  6. Step 6: Final answer
    x = 256,488.22

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1.5x scale

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.