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Finding the Fourth Proportional to 262,147.95, 393,158.01 and 72,603.39

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Solution

The fourth proportional to 262,147.95, 393,158.01 and 72,603.39 is: 108,887.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,147.95 : 393,158.01 = 72,603.39 : x
  2. Step 2: Convert to fraction form
    262,147.95/393,158.01 = 72,603.39/x
  3. Step 3: Cross multiply
    262,147.95x = 393,158.01 × 72,603.39
  4. Step 4: Simplify right side
    262,147.95x = 28,544,604,331.65
  5. Step 5: Solve for x
    x = 28,544,604,331.65/262,147.95
  6. Step 6: Final answer
    x = 108,887.38

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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.