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Finding the Fourth Proportional to 383,164.77, 528,987.47 and 254,278.02

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Solution

The fourth proportional to 383,164.77, 528,987.47 and 254,278.02 is: 351,049.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,164.77 : 528,987.47 = 254,278.02 : x
  2. Step 2: Convert to fraction form
    383,164.77/528,987.47 = 254,278.02/x
  3. Step 3: Cross multiply
    383,164.77x = 528,987.47 × 254,278.02
  4. Step 4: Simplify right side
    383,164.77x = 134,509,886,476.41
  5. Step 5: Solve for x
    x = 134,509,886,476.41/383,164.77
  6. Step 6: Final answer
    x = 351,049.72

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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.