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Finding the Fourth Proportional to 209,861.64, 314,687.52 and 124,559.64

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Solution

The fourth proportional to 209,861.64, 314,687.52 and 124,559.64 is: 186,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,861.64 : 314,687.52 = 124,559.64 : x
  2. Step 2: Convert to fraction form
    209,861.64/314,687.52 = 124,559.64/x
  3. Step 3: Cross multiply
    209,861.64x = 314,687.52 × 124,559.64
  4. Step 4: Simplify right side
    209,861.64x = 39,197,364,203.69
  5. Step 5: Solve for x
    x = 39,197,364,203.69/209,861.64
  6. Step 6: Final answer
    x = 186,777.17

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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.