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Finding the Fourth Proportional to 393,466.37, 590,136.53 and 140,699.67

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Solution

The fourth proportional to 393,466.37, 590,136.53 and 140,699.67 is: 211,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,466.37 : 590,136.53 = 140,699.67 : x
  2. Step 2: Convert to fraction form
    393,466.37/590,136.53 = 140,699.67/x
  3. Step 3: Cross multiply
    393,466.37x = 590,136.53 × 140,699.67
  4. Step 4: Simplify right side
    393,466.37x = 83,032,014,322.45
  5. Step 5: Solve for x
    x = 83,032,014,322.45/393,466.37
  6. Step 6: Final answer
    x = 211,026.97

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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.