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Finding the Fourth Proportional to 243,153.56, 335,607.90 and 142,583.96

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Solution

The fourth proportional to 243,153.56, 335,607.90 and 142,583.96 is: 196,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,153.56 : 335,607.90 = 142,583.96 : x
  2. Step 2: Convert to fraction form
    243,153.56/335,607.90 = 142,583.96/x
  3. Step 3: Cross multiply
    243,153.56x = 335,607.90 × 142,583.96
  4. Step 4: Simplify right side
    243,153.56x = 47,852,303,389.28
  5. Step 5: Solve for x
    x = 47,852,303,389.28/243,153.56
  6. Step 6: Final answer
    x = 196,798.70

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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.