Home / 312,862.28-432,106.26-212,085.32

Finding the Fourth Proportional to 312,862.28, 432,106.26 and 212,085.32

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Solution

The fourth proportional to 312,862.28, 432,106.26 and 212,085.32 is: 292,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,862.28 : 432,106.26 = 212,085.32 : x
  2. Step 2: Convert to fraction form
    312,862.28/432,106.26 = 212,085.32/x
  3. Step 3: Cross multiply
    312,862.28x = 432,106.26 × 212,085.32
  4. Step 4: Simplify right side
    312,862.28x = 91,643,394,426.10
  5. Step 5: Solve for x
    x = 91,643,394,426.10/312,862.28
  6. Step 6: Final answer
    x = 292,919.28

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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.