Home / 280,496,216.45-420,744,328.32-76,024,291.70

Finding the Fourth Proportional to 280,496,216.45, 420,744,328.32 and 76,024,291.70

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Solution

The fourth proportional to 280,496,216.45, 420,744,328.32 and 76,024,291.70 is: 114,036,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,496,216.45 : 420,744,328.32 = 76,024,291.70 : x
  2. Step 2: Convert to fraction form
    280,496,216.45/420,744,328.32 = 76,024,291.70/x
  3. Step 3: Cross multiply
    280,496,216.45x = 420,744,328.32 × 76,024,291.70
  4. Step 4: Simplify right side
    280,496,216.45x = 31,986,789,548,657,960
  5. Step 5: Solve for x
    x = 31,986,789,548,657,960/280,496,216.45
  6. Step 6: Final answer
    x = 114,036,438.54

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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.