Home / 287,722,437.84-431,476,515.54-103,439,628.72

Finding the Fourth Proportional to 287,722,437.84, 431,476,515.54 and 103,439,628.72

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Solution

The fourth proportional to 287,722,437.84, 431,476,515.54 and 103,439,628.72 is: 155,120,924.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,722,437.84 : 431,476,515.54 = 103,439,628.72 : x
  2. Step 2: Convert to fraction form
    287,722,437.84/431,476,515.54 = 103,439,628.72/x
  3. Step 3: Cross multiply
    287,722,437.84x = 431,476,515.54 × 103,439,628.72
  4. Step 4: Simplify right side
    287,722,437.84x = 44,631,770,568,856,912
  5. Step 5: Solve for x
    x = 44,631,770,568,856,912/287,722,437.84
  6. Step 6: Final answer
    x = 155,120,924.54

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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.