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Finding the Fourth Proportional to 570,079.20, 854,584.20 and 215,331.60

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Solution

The fourth proportional to 570,079.20, 854,584.20 and 215,331.60 is: 322,795.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,079.20 : 854,584.20 = 215,331.60 : x
  2. Step 2: Convert to fraction form
    570,079.20/854,584.20 = 215,331.60/x
  3. Step 3: Cross multiply
    570,079.20x = 854,584.20 × 215,331.60
  4. Step 4: Simplify right side
    570,079.20x = 184,018,983,120.72
  5. Step 5: Solve for x
    x = 184,018,983,120.72/570,079.20
  6. Step 6: Final answer
    x = 322,795.47

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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.