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Finding the Fourth Proportional to 217,159.79, 299,697.48 and 139,704.60

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Solution

The fourth proportional to 217,159.79, 299,697.48 and 139,704.60 is: 192,803.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,159.79 : 299,697.48 = 139,704.60 : x
  2. Step 2: Convert to fraction form
    217,159.79/299,697.48 = 139,704.60/x
  3. Step 3: Cross multiply
    217,159.79x = 299,697.48 × 139,704.60
  4. Step 4: Simplify right side
    217,159.79x = 41,869,116,564.41
  5. Step 5: Solve for x
    x = 41,869,116,564.41/217,159.79
  6. Step 6: Final answer
    x = 192,803.27

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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.