Home / 280,034,961.90-420,052,442.85-75,562,709.10

Finding the Fourth Proportional to 280,034,961.90, 420,052,442.85 and 75,562,709.10

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Solution

The fourth proportional to 280,034,961.90, 420,052,442.85 and 75,562,709.10 is: 113,344,063.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,034,961.90 : 420,052,442.85 = 75,562,709.10 : x
  2. Step 2: Convert to fraction form
    280,034,961.90/420,052,442.85 = 75,562,709.10/x
  3. Step 3: Cross multiply
    280,034,961.90x = 420,052,442.85 × 75,562,709.10
  4. Step 4: Simplify right side
    280,034,961.90x = 31,740,300,545,818,924
  5. Step 5: Solve for x
    x = 31,740,300,545,818,924/280,034,961.90
  6. Step 6: Final answer
    x = 113,344,063.65

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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.