Home / 290,639.56-401,130.76-169,780.44

Finding the Fourth Proportional to 290,639.56, 401,130.76 and 169,780.44

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Solution

The fourth proportional to 290,639.56, 401,130.76 and 169,780.44 is: 234,325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,639.56 : 401,130.76 = 169,780.44 : x
  2. Step 2: Convert to fraction form
    290,639.56/401,130.76 = 169,780.44/x
  3. Step 3: Cross multiply
    290,639.56x = 401,130.76 × 169,780.44
  4. Step 4: Simplify right side
    290,639.56x = 68,104,156,930.33
  5. Step 5: Solve for x
    x = 68,104,156,930.33/290,639.56
  6. Step 6: Final answer
    x = 234,325.14

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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.