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Finding the Fourth Proportional to 427,391.32, 589,763.28 and 236,357.16

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Solution

The fourth proportional to 427,391.32, 589,763.28 and 236,357.16 is: 326,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,391.32 : 589,763.28 = 236,357.16 : x
  2. Step 2: Convert to fraction form
    427,391.32/589,763.28 = 236,357.16/x
  3. Step 3: Cross multiply
    427,391.32x = 589,763.28 × 236,357.16
  4. Step 4: Simplify right side
    427,391.32x = 139,394,773,933.09
  5. Step 5: Solve for x
    x = 139,394,773,933.09/427,391.32
  6. Step 6: Final answer
    x = 326,152.56

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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.