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Finding the Fourth Proportional to 660,879.60, 991,317.57 and 187,565.41

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Solution

The fourth proportional to 660,879.60, 991,317.57 and 187,565.41 is: 281,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,879.60 : 991,317.57 = 187,565.41 : x
  2. Step 2: Convert to fraction form
    660,879.60/991,317.57 = 187,565.41/x
  3. Step 3: Cross multiply
    660,879.60x = 991,317.57 × 187,565.41
  4. Step 4: Simplify right side
    660,879.60x = 185,936,886,457.25
  5. Step 5: Solve for x
    x = 185,936,886,457.25/660,879.60
  6. Step 6: Final answer
    x = 281,347.60

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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.