Home / 278,707,515.70-384,640,881.90-153,281,811.18

Finding the Fourth Proportional to 278,707,515.70, 384,640,881.90 and 153,281,811.18

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Solution

The fourth proportional to 278,707,515.70, 384,640,881.90 and 153,281,811.18 is: 211,542,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,707,515.70 : 384,640,881.90 = 153,281,811.18 : x
  2. Step 2: Convert to fraction form
    278,707,515.70/384,640,881.90 = 153,281,811.18/x
  3. Step 3: Cross multiply
    278,707,515.70x = 384,640,881.90 × 153,281,811.18
  4. Step 4: Simplify right side
    278,707,515.70x = 58,958,451,031,504,480
  5. Step 5: Solve for x
    x = 58,958,451,031,504,480/278,707,515.70
  6. Step 6: Final answer
    x = 211,542,379.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.