Home / 255,746.12-383,729.80-137,279.12

Finding the Fourth Proportional to 255,746.12, 383,729.80 and 137,279.12

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Solution

The fourth proportional to 255,746.12, 383,729.80 and 137,279.12 is: 205,978.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,746.12 : 383,729.80 = 137,279.12 : x
  2. Step 2: Convert to fraction form
    255,746.12/383,729.80 = 137,279.12/x
  3. Step 3: Cross multiply
    255,746.12x = 383,729.80 × 137,279.12
  4. Step 4: Simplify right side
    255,746.12x = 52,678,089,261.78
  5. Step 5: Solve for x
    x = 52,678,089,261.78/255,746.12
  6. Step 6: Final answer
    x = 205,978.06

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1.5x scale

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.