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Finding the Fourth Proportional to 245,149.05, 338,303.65 and 137,716.77

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Solution

The fourth proportional to 245,149.05, 338,303.65 and 137,716.77 is: 190,048.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,149.05 : 338,303.65 = 137,716.77 : x
  2. Step 2: Convert to fraction form
    245,149.05/338,303.65 = 137,716.77/x
  3. Step 3: Cross multiply
    245,149.05x = 338,303.65 × 137,716.77
  4. Step 4: Simplify right side
    245,149.05x = 46,590,086,752.45
  5. Step 5: Solve for x
    x = 46,590,086,752.45/245,149.05
  6. Step 6: Final answer
    x = 190,048.00

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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.