Home / 277,749.20-416,623.80-90,779.60

Finding the Fourth Proportional to 277,749.20, 416,623.80 and 90,779.60

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Solution

The fourth proportional to 277,749.20, 416,623.80 and 90,779.60 is: 136,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,749.20 : 416,623.80 = 90,779.60 : x
  2. Step 2: Convert to fraction form
    277,749.20/416,623.80 = 90,779.60/x
  3. Step 3: Cross multiply
    277,749.20x = 416,623.80 × 90,779.60
  4. Step 4: Simplify right side
    277,749.20x = 37,820,941,914.48
  5. Step 5: Solve for x
    x = 37,820,941,914.48/277,749.20
  6. Step 6: Final answer
    x = 136,169.40

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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.