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Finding the Fourth Proportional to 519,944, 717,522.72 and 281,480

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Solution

The fourth proportional to 519,944, 717,522.72 and 281,480 is: 388,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,944 : 717,522.72 = 281,480 : x
  2. Step 2: Convert to fraction form
    519,944/717,522.72 = 281,480/x
  3. Step 3: Cross multiply
    519,944x = 717,522.72 × 281,480
  4. Step 4: Simplify right side
    519,944x = 201,968,295,225.60
  5. Step 5: Solve for x
    x = 201,968,295,225.60/519,944
  6. Step 6: Final answer
    x = 388,442.40

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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.