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Finding the Fourth Proportional to 321,801.30, 483,479.55 and 287,586.90

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Solution

The fourth proportional to 321,801.30, 483,479.55 and 287,586.90 is: 432,075.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,801.30 : 483,479.55 = 287,586.90 : x
  2. Step 2: Convert to fraction form
    321,801.30/483,479.55 = 287,586.90/x
  3. Step 3: Cross multiply
    321,801.30x = 483,479.55 × 287,586.90
  4. Step 4: Simplify right side
    321,801.30x = 139,042,384,997.90
  5. Step 5: Solve for x
    x = 139,042,384,997.90/321,801.30
  6. Step 6: Final answer
    x = 432,075.27

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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.