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Finding the Fourth Proportional to 258,075.97, 387,048.21 and 80,600.92

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Solution

The fourth proportional to 258,075.97, 387,048.21 and 80,600.92 is: 120,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,075.97 : 387,048.21 = 80,600.92 : x
  2. Step 2: Convert to fraction form
    258,075.97/387,048.21 = 80,600.92/x
  3. Step 3: Cross multiply
    258,075.97x = 387,048.21 × 80,600.92
  4. Step 4: Simplify right side
    258,075.97x = 31,196,441,810.35
  5. Step 5: Solve for x
    x = 31,196,441,810.35/258,075.97
  6. Step 6: Final answer
    x = 120,880.85

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1.5x scale

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.