Home / 213,539,015.20-320,308,522.80-145,010,682.40

Finding the Fourth Proportional to 213,539,015.20, 320,308,522.80 and 145,010,682.40

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Solution

The fourth proportional to 213,539,015.20, 320,308,522.80 and 145,010,682.40 is: 217,516,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,539,015.20 : 320,308,522.80 = 145,010,682.40 : x
  2. Step 2: Convert to fraction form
    213,539,015.20/320,308,522.80 = 145,010,682.40/x
  3. Step 3: Cross multiply
    213,539,015.20x = 320,308,522.80 × 145,010,682.40
  4. Step 4: Simplify right side
    213,539,015.20x = 46,448,157,469,763,960
  5. Step 5: Solve for x
    x = 46,448,157,469,763,960/213,539,015.20
  6. Step 6: Final answer
    x = 217,516,023.60

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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.