Home / 278,960.40-384,962.96-151,635.60

Finding the Fourth Proportional to 278,960.40, 384,962.96 and 151,635.60

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Solution

The fourth proportional to 278,960.40, 384,962.96 and 151,635.60 is: 209,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,960.40 : 384,962.96 = 151,635.60 : x
  2. Step 2: Convert to fraction form
    278,960.40/384,962.96 = 151,635.60/x
  3. Step 3: Cross multiply
    278,960.40x = 384,962.96 × 151,635.60
  4. Step 4: Simplify right side
    278,960.40x = 58,374,089,417.38
  5. Step 5: Solve for x
    x = 58,374,089,417.38/278,960.40
  6. Step 6: Final answer
    x = 209,255.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.