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Finding the Fourth Proportional to 401,388.40, 553,941.60 and 265,183.41

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Solution

The fourth proportional to 401,388.40, 553,941.60 and 265,183.41 is: 365,970.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,388.40 : 553,941.60 = 265,183.41 : x
  2. Step 2: Convert to fraction form
    401,388.40/553,941.60 = 265,183.41/x
  3. Step 3: Cross multiply
    401,388.40x = 553,941.60 × 265,183.41
  4. Step 4: Simplify right side
    401,388.40x = 146,896,122,428.86
  5. Step 5: Solve for x
    x = 146,896,122,428.86/401,388.40
  6. Step 6: Final answer
    x = 365,970.02

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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.