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Finding the Fourth Proportional to 245,274.79, 338,507.27 and 136,389.98

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Solution

The fourth proportional to 245,274.79, 338,507.27 and 136,389.98 is: 188,233.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,274.79 : 338,507.27 = 136,389.98 : x
  2. Step 2: Convert to fraction form
    245,274.79/338,507.27 = 136,389.98/x
  3. Step 3: Cross multiply
    245,274.79x = 338,507.27 × 136,389.98
  4. Step 4: Simplify right side
    245,274.79x = 46,168,999,785.15
  5. Step 5: Solve for x
    x = 46,168,999,785.15/245,274.79
  6. Step 6: Final answer
    x = 188,233.78

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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.