Home / 330,075.90-455,491.62-186,865.65

Finding the Fourth Proportional to 330,075.90, 455,491.62 and 186,865.65

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Solution

The fourth proportional to 330,075.90, 455,491.62 and 186,865.65 is: 257,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,075.90 : 455,491.62 = 186,865.65 : x
  2. Step 2: Convert to fraction form
    330,075.90/455,491.62 = 186,865.65/x
  3. Step 3: Cross multiply
    330,075.90x = 455,491.62 × 186,865.65
  4. Step 4: Simplify right side
    330,075.90x = 85,115,737,640.85
  5. Step 5: Solve for x
    x = 85,115,737,640.85/330,075.90
  6. Step 6: Final answer
    x = 257,867.17

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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.