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Finding the Fourth Proportional to 383,321.16, 528,702.39 and 254,025.72

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Solution

The fourth proportional to 383,321.16, 528,702.39 and 254,025.72 is: 350,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,321.16 : 528,702.39 = 254,025.72 : x
  2. Step 2: Convert to fraction form
    383,321.16/528,702.39 = 254,025.72/x
  3. Step 3: Cross multiply
    383,321.16x = 528,702.39 × 254,025.72
  4. Step 4: Simplify right side
    383,321.16x = 134,304,005,285.47
  5. Step 5: Solve for x
    x = 134,304,005,285.47/383,321.16
  6. Step 6: Final answer
    x = 350,369.40

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1.5x scale

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.