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Finding the Fourth Proportional to 279,938,699.60, 419,908,049.40 and 98,120,267.60

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Solution

The fourth proportional to 279,938,699.60, 419,908,049.40 and 98,120,267.60 is: 147,180,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,699.60 : 419,908,049.40 = 98,120,267.60 : x
  2. Step 2: Convert to fraction form
    279,938,699.60/419,908,049.40 = 98,120,267.60/x
  3. Step 3: Cross multiply
    279,938,699.60x = 419,908,049.40 × 98,120,267.60
  4. Step 4: Simplify right side
    279,938,699.60x = 41,201,490,174,522,016
  5. Step 5: Solve for x
    x = 41,201,490,174,522,016/279,938,699.60
  6. Step 6: Final answer
    x = 147,180,401.40

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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.