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Finding the Fourth Proportional to 245,248.74, 338,440.22 and 137,836.98

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Solution

The fourth proportional to 245,248.74, 338,440.22 and 137,836.98 is: 190,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,248.74 : 338,440.22 = 137,836.98 : x
  2. Step 2: Convert to fraction form
    245,248.74/338,440.22 = 137,836.98/x
  3. Step 3: Cross multiply
    245,248.74x = 338,440.22 × 137,836.98
  4. Step 4: Simplify right side
    245,248.74x = 46,649,577,146.15
  5. Step 5: Solve for x
    x = 46,649,577,146.15/245,248.74
  6. Step 6: Final answer
    x = 190,213.32

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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.