Home / 345,112.41-517,232.43-155,370.72

Finding the Fourth Proportional to 345,112.41, 517,232.43 and 155,370.72

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Solution

The fourth proportional to 345,112.41, 517,232.43 and 155,370.72 is: 232,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,112.41 : 517,232.43 = 155,370.72 : x
  2. Step 2: Convert to fraction form
    345,112.41/517,232.43 = 155,370.72/x
  3. Step 3: Cross multiply
    345,112.41x = 517,232.43 × 155,370.72
  4. Step 4: Simplify right side
    345,112.41x = 80,362,775,056.45
  5. Step 5: Solve for x
    x = 80,362,775,056.45/345,112.41
  6. Step 6: Final answer
    x = 232,859.71

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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.