Home / 278,707,512.69-384,640,877.75-153,281,808.18

Finding the Fourth Proportional to 278,707,512.69, 384,640,877.75 and 153,281,808.18

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Solution

The fourth proportional to 278,707,512.69, 384,640,877.75 and 153,281,808.18 is: 211,542,375.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,707,512.69 : 384,640,877.75 = 153,281,808.18 : x
  2. Step 2: Convert to fraction form
    278,707,512.69/384,640,877.75 = 153,281,808.18/x
  3. Step 3: Cross multiply
    278,707,512.69x = 384,640,877.75 × 153,281,808.18
  4. Step 4: Simplify right side
    278,707,512.69x = 58,958,449,240,695,928
  5. Step 5: Solve for x
    x = 58,958,449,240,695,928/278,707,512.69
  6. Step 6: Final answer
    x = 211,542,375.27

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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.