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Finding the Fourth Proportional to 243,774.71, 336,406.62 and 136,344.49

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Solution

The fourth proportional to 243,774.71, 336,406.62 and 136,344.49 is: 188,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,774.71 : 336,406.62 = 136,344.49 : x
  2. Step 2: Convert to fraction form
    243,774.71/336,406.62 = 136,344.49/x
  3. Step 3: Cross multiply
    243,774.71x = 336,406.62 × 136,344.49
  4. Step 4: Simplify right side
    243,774.71x = 45,867,188,886.01
  5. Step 5: Solve for x
    x = 45,867,188,886.01/243,774.71
  6. Step 6: Final answer
    x = 188,154.01

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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.