Home / 402,956.03-556,057.38-221,638.68

Finding the Fourth Proportional to 402,956.03, 556,057.38 and 221,638.68

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Solution

The fourth proportional to 402,956.03, 556,057.38 and 221,638.68 is: 305,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,956.03 : 556,057.38 = 221,638.68 : x
  2. Step 2: Convert to fraction form
    402,956.03/556,057.38 = 221,638.68/x
  3. Step 3: Cross multiply
    402,956.03x = 556,057.38 × 221,638.68
  4. Step 4: Simplify right side
    402,956.03x = 123,243,823,707.46
  5. Step 5: Solve for x
    x = 123,243,823,707.46/402,956.03
  6. Step 6: Final answer
    x = 305,849.31

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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.