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Finding the Fourth Proportional to 243,639, 336,313.44 and 183,384

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Solution

The fourth proportional to 243,639, 336,313.44 and 183,384 is: 253,138.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,639 : 336,313.44 = 183,384 : x
  2. Step 2: Convert to fraction form
    243,639/336,313.44 = 183,384/x
  3. Step 3: Cross multiply
    243,639x = 336,313.44 × 183,384
  4. Step 4: Simplify right side
    243,639x = 61,674,503,880.96
  5. Step 5: Solve for x
    x = 61,674,503,880.96/243,639
  6. Step 6: Final answer
    x = 253,138.88

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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.