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Finding the Fourth Proportional to 383,420.98, 529,112.62 and 222,271.89

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Solution

The fourth proportional to 383,420.98, 529,112.62 and 222,271.89 is: 306,730.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,420.98 : 529,112.62 = 222,271.89 : x
  2. Step 2: Convert to fraction form
    383,420.98/529,112.62 = 222,271.89/x
  3. Step 3: Cross multiply
    383,420.98x = 529,112.62 × 222,271.89
  4. Step 4: Simplify right side
    383,420.98x = 117,606,862,070.25
  5. Step 5: Solve for x
    x = 117,606,862,070.25/383,420.98
  6. Step 6: Final answer
    x = 306,730.38

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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.