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Finding the Fourth Proportional to 291,211.76, 401,885.16 and 163,895.60

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Solution

The fourth proportional to 291,211.76, 401,885.16 and 163,895.60 is: 226,183.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,211.76 : 401,885.16 = 163,895.60 : x
  2. Step 2: Convert to fraction form
    291,211.76/401,885.16 = 163,895.60/x
  3. Step 3: Cross multiply
    291,211.76x = 401,885.16 × 163,895.60
  4. Step 4: Simplify right side
    291,211.76x = 65,867,209,429.30
  5. Step 5: Solve for x
    x = 65,867,209,429.30/291,211.76
  6. Step 6: Final answer
    x = 226,183.21

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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.