Home / 255,941.10-383,985.42-78,474.27

Finding the Fourth Proportional to 255,941.10, 383,985.42 and 78,474.27

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Solution

The fourth proportional to 255,941.10, 383,985.42 and 78,474.27 is: 117,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,941.10 : 383,985.42 = 78,474.27 : x
  2. Step 2: Convert to fraction form
    255,941.10/383,985.42 = 78,474.27/x
  3. Step 3: Cross multiply
    255,941.10x = 383,985.42 × 78,474.27
  4. Step 4: Simplify right side
    255,941.10x = 30,132,975,525.14
  5. Step 5: Solve for x
    x = 30,132,975,525.14/255,941.10
  6. Step 6: Final answer
    x = 117,734.02

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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.