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Finding the Fourth Proportional to 519,658, 717,130.20 and 281,194

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Solution

The fourth proportional to 519,658, 717,130.20 and 281,194 is: 388,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,658 : 717,130.20 = 281,194 : x
  2. Step 2: Convert to fraction form
    519,658/717,130.20 = 281,194/x
  3. Step 3: Cross multiply
    519,658x = 717,130.20 × 281,194
  4. Step 4: Simplify right side
    519,658x = 201,652,709,458.80
  5. Step 5: Solve for x
    x = 201,652,709,458.80/519,658
  6. Step 6: Final answer
    x = 388,048.89

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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.