Home / 255,740.08-383,610.48-78,246.40

Finding the Fourth Proportional to 255,740.08, 383,610.48 and 78,246.40

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Solution

The fourth proportional to 255,740.08, 383,610.48 and 78,246.40 is: 117,369.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,740.08 : 383,610.48 = 78,246.40 : x
  2. Step 2: Convert to fraction form
    255,740.08/383,610.48 = 78,246.40/x
  3. Step 3: Cross multiply
    255,740.08x = 383,610.48 × 78,246.40
  4. Step 4: Simplify right side
    255,740.08x = 30,016,139,062.27
  5. Step 5: Solve for x
    x = 30,016,139,062.27/255,740.08
  6. Step 6: Final answer
    x = 117,369.71

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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.