Home / 280,008,003.20-420,012,004.80-183,262,121.60

Finding the Fourth Proportional to 280,008,003.20, 420,012,004.80 and 183,262,121.60

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Solution

The fourth proportional to 280,008,003.20, 420,012,004.80 and 183,262,121.60 is: 274,893,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,008,003.20 : 420,012,004.80 = 183,262,121.60 : x
  2. Step 2: Convert to fraction form
    280,008,003.20/420,012,004.80 = 183,262,121.60/x
  3. Step 3: Cross multiply
    280,008,003.20x = 420,012,004.80 × 183,262,121.60
  4. Step 4: Simplify right side
    280,008,003.20x = 76,972,291,097,117,376
  5. Step 5: Solve for x
    x = 76,972,291,097,117,376/280,008,003.20
  6. Step 6: Final answer
    x = 274,893,182.40

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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.