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Finding the Fourth Proportional to 243,143.26, 335,715.50 and 157,153.16

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Solution

The fourth proportional to 243,143.26, 335,715.50 and 157,153.16 is: 216,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,143.26 : 335,715.50 = 157,153.16 : x
  2. Step 2: Convert to fraction form
    243,143.26/335,715.50 = 157,153.16/x
  3. Step 3: Cross multiply
    243,143.26x = 335,715.50 × 157,153.16
  4. Step 4: Simplify right side
    243,143.26x = 52,758,751,685.98
  5. Step 5: Solve for x
    x = 52,758,751,685.98/243,143.26
  6. Step 6: Final answer
    x = 216,986.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.