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Finding the Fourth Proportional to 550,029.07, 759,075.18 and 308,311.69

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Solution

The fourth proportional to 550,029.07, 759,075.18 and 308,311.69 is: 425,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,029.07 : 759,075.18 = 308,311.69 : x
  2. Step 2: Convert to fraction form
    550,029.07/759,075.18 = 308,311.69/x
  3. Step 3: Cross multiply
    550,029.07x = 759,075.18 × 308,311.69
  4. Step 4: Simplify right side
    550,029.07x = 234,031,751,582.85
  5. Step 5: Solve for x
    x = 234,031,751,582.85/550,029.07
  6. Step 6: Final answer
    x = 425,489.79

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1.5x scale

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.