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Finding the Fourth Proportional to 216,705.68, 299,085.76 and 131,806.32

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Solution

The fourth proportional to 216,705.68, 299,085.76 and 131,806.32 is: 181,912.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,705.68 : 299,085.76 = 131,806.32 : x
  2. Step 2: Convert to fraction form
    216,705.68/299,085.76 = 131,806.32/x
  3. Step 3: Cross multiply
    216,705.68x = 299,085.76 × 131,806.32
  4. Step 4: Simplify right side
    216,705.68x = 39,421,393,390.00
  5. Step 5: Solve for x
    x = 39,421,393,390.00/216,705.68
  6. Step 6: Final answer
    x = 181,912.14

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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.