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Finding the Fourth Proportional to 360,015.60, 540,023.40 and 342,519.60

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Solution

The fourth proportional to 360,015.60, 540,023.40 and 342,519.60 is: 513,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,015.60 : 540,023.40 = 342,519.60 : x
  2. Step 2: Convert to fraction form
    360,015.60/540,023.40 = 342,519.60/x
  3. Step 3: Cross multiply
    360,015.60x = 540,023.40 × 342,519.60
  4. Step 4: Simplify right side
    360,015.60x = 184,968,598,958.64
  5. Step 5: Solve for x
    x = 184,968,598,958.64/360,015.60
  6. Step 6: Final answer
    x = 513,779.40

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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.