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Finding the Fourth Proportional to 253,658.57, 349,880.22 and 163,128.96

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Solution

The fourth proportional to 253,658.57, 349,880.22 and 163,128.96 is: 225,009.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,658.57 : 349,880.22 = 163,128.96 : x
  2. Step 2: Convert to fraction form
    253,658.57/349,880.22 = 163,128.96/x
  3. Step 3: Cross multiply
    253,658.57x = 349,880.22 × 163,128.96
  4. Step 4: Simplify right side
    253,658.57x = 57,075,596,413.17
  5. Step 5: Solve for x
    x = 57,075,596,413.17/253,658.57
  6. Step 6: Final answer
    x = 225,009.54

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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.