Home / 279,428.05-385,610.75-152,103.63

Finding the Fourth Proportional to 279,428.05, 385,610.75 and 152,103.63

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Solution

The fourth proportional to 279,428.05, 385,610.75 and 152,103.63 is: 209,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,428.05 : 385,610.75 = 152,103.63 : x
  2. Step 2: Convert to fraction form
    279,428.05/385,610.75 = 152,103.63/x
  3. Step 3: Cross multiply
    279,428.05x = 385,610.75 × 152,103.63
  4. Step 4: Simplify right side
    279,428.05x = 58,652,794,842.02
  5. Step 5: Solve for x
    x = 58,652,794,842.02/279,428.05
  6. Step 6: Final answer
    x = 209,903.03

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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.