Home / 279,301.12-385,440.16-151,977.36

Finding the Fourth Proportional to 279,301.12, 385,440.16 and 151,977.36

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Solution

The fourth proportional to 279,301.12, 385,440.16 and 151,977.36 is: 209,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,301.12 : 385,440.16 = 151,977.36 : x
  2. Step 2: Convert to fraction form
    279,301.12/385,440.16 = 151,977.36/x
  3. Step 3: Cross multiply
    279,301.12x = 385,440.16 × 151,977.36
  4. Step 4: Simplify right side
    279,301.12x = 58,578,177,954.78
  5. Step 5: Solve for x
    x = 58,578,177,954.78/279,301.12
  6. Step 6: Final answer
    x = 209,731.27

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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.