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Finding the Fourth Proportional to 262,271.16, 393,131.34 and 143,907.48

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Solution

The fourth proportional to 262,271.16, 393,131.34 and 143,907.48 is: 215,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,271.16 : 393,131.34 = 143,907.48 : x
  2. Step 2: Convert to fraction form
    262,271.16/393,131.34 = 143,907.48/x
  3. Step 3: Cross multiply
    262,271.16x = 393,131.34 × 143,907.48
  4. Step 4: Simplify right side
    262,271.16x = 56,574,540,448.42
  5. Step 5: Solve for x
    x = 56,574,540,448.42/262,271.16
  6. Step 6: Final answer
    x = 215,710.11

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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.