Home / 211,428.15-317,140.39-53,654.32

Finding the Fourth Proportional to 211,428.15, 317,140.39 and 53,654.32

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Solution

The fourth proportional to 211,428.15, 317,140.39 and 53,654.32 is: 80,481.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,428.15 : 317,140.39 = 53,654.32 : x
  2. Step 2: Convert to fraction form
    211,428.15/317,140.39 = 53,654.32/x
  3. Step 3: Cross multiply
    211,428.15x = 317,140.39 × 53,654.32
  4. Step 4: Simplify right side
    211,428.15x = 17,015,951,969.98
  5. Step 5: Solve for x
    x = 17,015,951,969.98/211,428.15
  6. Step 6: Final answer
    x = 80,481.01

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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.