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Finding the Fourth Proportional to 216,896.70, 298,911.75 and 156,364.19

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Solution

The fourth proportional to 216,896.70, 298,911.75 and 156,364.19 is: 215,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,896.70 : 298,911.75 = 156,364.19 : x
  2. Step 2: Convert to fraction form
    216,896.70/298,911.75 = 156,364.19/x
  3. Step 3: Cross multiply
    216,896.70x = 298,911.75 × 156,364.19
  4. Step 4: Simplify right side
    216,896.70x = 46,739,092,175.67
  5. Step 5: Solve for x
    x = 46,739,092,175.67/216,896.70
  6. Step 6: Final answer
    x = 215,490.10

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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.