Home / 319,039.20-478,558.80-178,779.60

Finding the Fourth Proportional to 319,039.20, 478,558.80 and 178,779.60

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Solution

The fourth proportional to 319,039.20, 478,558.80 and 178,779.60 is: 268,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,039.20 : 478,558.80 = 178,779.60 : x
  2. Step 2: Convert to fraction form
    319,039.20/478,558.80 = 178,779.60/x
  3. Step 3: Cross multiply
    319,039.20x = 478,558.80 × 178,779.60
  4. Step 4: Simplify right side
    319,039.20x = 85,556,550,840.48
  5. Step 5: Solve for x
    x = 85,556,550,840.48/319,039.20
  6. Step 6: Final answer
    x = 268,169.40

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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.