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Finding the Fourth Proportional to 245,515, 338,811.06 and 144,913

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Solution

The fourth proportional to 245,515, 338,811.06 and 144,913 is: 199,980.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,515 : 338,811.06 = 144,913 : x
  2. Step 2: Convert to fraction form
    245,515/338,811.06 = 144,913/x
  3. Step 3: Cross multiply
    245,515x = 338,811.06 × 144,913
  4. Step 4: Simplify right side
    245,515x = 49,098,127,137.78
  5. Step 5: Solve for x
    x = 49,098,127,137.78/245,515
  6. Step 6: Final answer
    x = 199,980.15

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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.