Home / 389,823.20-584,734.80-190,271.60

Finding the Fourth Proportional to 389,823.20, 584,734.80 and 190,271.60

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Solution

The fourth proportional to 389,823.20, 584,734.80 and 190,271.60 is: 285,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,823.20 : 584,734.80 = 190,271.60 : x
  2. Step 2: Convert to fraction form
    389,823.20/584,734.80 = 190,271.60/x
  3. Step 3: Cross multiply
    389,823.20x = 584,734.80 × 190,271.60
  4. Step 4: Simplify right side
    389,823.20x = 111,258,425,971.68
  5. Step 5: Solve for x
    x = 111,258,425,971.68/389,823.20
  6. Step 6: Final answer
    x = 285,407.40

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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.