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Finding the Fourth Proportional to 216,945.60, 325,612.80 and 187,396.80

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Solution

The fourth proportional to 216,945.60, 325,612.80 and 187,396.80 is: 281,263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,945.60 : 325,612.80 = 187,396.80 : x
  2. Step 2: Convert to fraction form
    216,945.60/325,612.80 = 187,396.80/x
  3. Step 3: Cross multiply
    216,945.60x = 325,612.80 × 187,396.80
  4. Step 4: Simplify right side
    216,945.60x = 61,018,796,759.04
  5. Step 5: Solve for x
    x = 61,018,796,759.04/216,945.60
  6. Step 6: Final answer
    x = 281,263.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.