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Finding the Fourth Proportional to 352,257.57, 486,368.21 and 216,473.57

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Solution

The fourth proportional to 352,257.57, 486,368.21 and 216,473.57 is: 298,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,257.57 : 486,368.21 = 216,473.57 : x
  2. Step 2: Convert to fraction form
    352,257.57/486,368.21 = 216,473.57/x
  3. Step 3: Cross multiply
    352,257.57x = 486,368.21 × 216,473.57
  4. Step 4: Simplify right side
    352,257.57x = 105,285,859,239.00
  5. Step 5: Solve for x
    x = 105,285,859,239.00/352,257.57
  6. Step 6: Final answer
    x = 298,888.85

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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.