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Finding the Fourth Proportional to 255,464.93, 383,242.50 and 105,621.28

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Solution

The fourth proportional to 255,464.93, 383,242.50 and 105,621.28 is: 158,450.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,464.93 : 383,242.50 = 105,621.28 : x
  2. Step 2: Convert to fraction form
    255,464.93/383,242.50 = 105,621.28/x
  3. Step 3: Cross multiply
    255,464.93x = 383,242.50 × 105,621.28
  4. Step 4: Simplify right side
    255,464.93x = 40,478,562,442.29
  5. Step 5: Solve for x
    x = 40,478,562,442.29/255,464.93
  6. Step 6: Final answer
    x = 158,450.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.