Home / 405,068.04-558,996.48-221,301.72

Finding the Fourth Proportional to 405,068.04, 558,996.48 and 221,301.72

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Solution

The fourth proportional to 405,068.04, 558,996.48 and 221,301.72 is: 305,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,068.04 : 558,996.48 = 221,301.72 : x
  2. Step 2: Convert to fraction form
    405,068.04/558,996.48 = 221,301.72/x
  3. Step 3: Cross multiply
    405,068.04x = 558,996.48 × 221,301.72
  4. Step 4: Simplify right side
    405,068.04x = 123,706,882,497.95
  5. Step 5: Solve for x
    x = 123,706,882,497.95/405,068.04
  6. Step 6: Final answer
    x = 305,397.79

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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.