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Finding the Fourth Proportional to 290,960.66, 401,521.84 and 163,636.25

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Solution

The fourth proportional to 290,960.66, 401,521.84 and 163,636.25 is: 225,815.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,960.66 : 401,521.84 = 163,636.25 : x
  2. Step 2: Convert to fraction form
    290,960.66/401,521.84 = 163,636.25/x
  3. Step 3: Cross multiply
    290,960.66x = 401,521.84 × 163,636.25
  4. Step 4: Simplify right side
    290,960.66x = 65,703,525,774.00
  5. Step 5: Solve for x
    x = 65,703,525,774.00/290,960.66
  6. Step 6: Final answer
    x = 225,815.84

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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.