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Finding the Fourth Proportional to 290,085.76, 400,317.96 and 162,773.20

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Solution

The fourth proportional to 290,085.76, 400,317.96 and 162,773.20 is: 224,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,085.76 : 400,317.96 = 162,773.20 : x
  2. Step 2: Convert to fraction form
    290,085.76/400,317.96 = 162,773.20/x
  3. Step 3: Cross multiply
    290,085.76x = 400,317.96 × 162,773.20
  4. Step 4: Simplify right side
    290,085.76x = 65,161,035,366.67
  5. Step 5: Solve for x
    x = 65,161,035,366.67/290,085.76
  6. Step 6: Final answer
    x = 224,626.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.