Home / 279,938,345.40-419,907,518.10-193,494,108.60

Finding the Fourth Proportional to 279,938,345.40, 419,907,518.10 and 193,494,108.60

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Solution

The fourth proportional to 279,938,345.40, 419,907,518.10 and 193,494,108.60 is: 290,241,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,345.40 : 419,907,518.10 = 193,494,108.60 : x
  2. Step 2: Convert to fraction form
    279,938,345.40/419,907,518.10 = 193,494,108.60/x
  3. Step 3: Cross multiply
    279,938,345.40x = 419,907,518.10 × 193,494,108.60
  4. Step 4: Simplify right side
    279,938,345.40x = 81,249,630,909,197,872
  5. Step 5: Solve for x
    x = 81,249,630,909,197,872/279,938,345.40
  6. Step 6: Final answer
    x = 290,241,162.90

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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.