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Finding the Fourth Proportional to 213,280.29, 319,674.36 and 80,075.59

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Solution

The fourth proportional to 213,280.29, 319,674.36 and 80,075.59 is: 120,021.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,280.29 : 319,674.36 = 80,075.59 : x
  2. Step 2: Convert to fraction form
    213,280.29/319,674.36 = 80,075.59/x
  3. Step 3: Cross multiply
    213,280.29x = 319,674.36 × 80,075.59
  4. Step 4: Simplify right side
    213,280.29x = 25,598,112,984.87
  5. Step 5: Solve for x
    x = 25,598,112,984.87/213,280.29
  6. Step 6: Final answer
    x = 120,021.00

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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.