Home / 276,021.12-380,801.10-155,134.80

Finding the Fourth Proportional to 276,021.12, 380,801.10 and 155,134.80

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Solution

The fourth proportional to 276,021.12, 380,801.10 and 155,134.80 is: 214,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,021.12 : 380,801.10 = 155,134.80 : x
  2. Step 2: Convert to fraction form
    276,021.12/380,801.10 = 155,134.80/x
  3. Step 3: Cross multiply
    276,021.12x = 380,801.10 × 155,134.80
  4. Step 4: Simplify right side
    276,021.12x = 59,075,502,488.28
  5. Step 5: Solve for x
    x = 59,075,502,488.28/276,021.12
  6. Step 6: Final answer
    x = 214,025.30

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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.