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Finding the Fourth Proportional to 262,791, 362,653.20 and 143,559

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Solution

The fourth proportional to 262,791, 362,653.20 and 143,559 is: 198,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,791 : 362,653.20 = 143,559 : x
  2. Step 2: Convert to fraction form
    262,791/362,653.20 = 143,559/x
  3. Step 3: Cross multiply
    262,791x = 362,653.20 × 143,559
  4. Step 4: Simplify right side
    262,791x = 52,062,130,738.80
  5. Step 5: Solve for x
    x = 52,062,130,738.80/262,791
  6. Step 6: Final answer
    x = 198,112.30

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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.