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Finding the Fourth Proportional to 368,996.22, 509,147.13 and 207,816.75

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Solution

The fourth proportional to 368,996.22, 509,147.13 and 207,816.75 is: 286,749.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,996.22 : 509,147.13 = 207,816.75 : x
  2. Step 2: Convert to fraction form
    368,996.22/509,147.13 = 207,816.75/x
  3. Step 3: Cross multiply
    368,996.22x = 509,147.13 × 207,816.75
  4. Step 4: Simplify right side
    368,996.22x = 105,809,301,828.43
  5. Step 5: Solve for x
    x = 105,809,301,828.43/368,996.22
  6. Step 6: Final answer
    x = 286,749.01

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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.