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Finding the Fourth Proportional to 418,840.16, 628,257.36 and 169,518.56

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Solution

The fourth proportional to 418,840.16, 628,257.36 and 169,518.56 is: 254,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,840.16 : 628,257.36 = 169,518.56 : x
  2. Step 2: Convert to fraction form
    418,840.16/628,257.36 = 169,518.56/x
  3. Step 3: Cross multiply
    418,840.16x = 628,257.36 × 169,518.56
  4. Step 4: Simplify right side
    418,840.16x = 106,501,282,976.60
  5. Step 5: Solve for x
    x = 106,501,282,976.60/418,840.16
  6. Step 6: Final answer
    x = 254,276.67

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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.