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Finding the Fourth Proportional to 290,804.80, 401,616.58 and 259,104.85

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Solution

The fourth proportional to 290,804.80, 401,616.58 and 259,104.85 is: 357,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,804.80 : 401,616.58 = 259,104.85 : x
  2. Step 2: Convert to fraction form
    290,804.80/401,616.58 = 259,104.85/x
  3. Step 3: Cross multiply
    290,804.80x = 401,616.58 × 259,104.85
  4. Step 4: Simplify right side
    290,804.80x = 104,060,803,718.41
  5. Step 5: Solve for x
    x = 104,060,803,718.41/290,804.80
  6. Step 6: Final answer
    x = 357,837.30

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1.5x scale

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.