Home / 875,121.40-1,312,682.10-210,273.40

Finding the Fourth Proportional to 875,121.40, 1,312,682.10 and 210,273.40

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Solution

The fourth proportional to 875,121.40, 1,312,682.10 and 210,273.40 is: 315,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,121.40 : 1,312,682.10 = 210,273.40 : x
  2. Step 2: Convert to fraction form
    875,121.40/1,312,682.10 = 210,273.40/x
  3. Step 3: Cross multiply
    875,121.40x = 1,312,682.10 × 210,273.40
  4. Step 4: Simplify right side
    875,121.40x = 276,022,128,286.14
  5. Step 5: Solve for x
    x = 276,022,128,286.14/875,121.40
  6. Step 6: Final answer
    x = 315,410.10

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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.