Home / 521,977.17-720,316.63-304,172.22

Finding the Fourth Proportional to 521,977.17, 720,316.63 and 304,172.22

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Solution

The fourth proportional to 521,977.17, 720,316.63 and 304,172.22 is: 419,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,977.17 : 720,316.63 = 304,172.22 : x
  2. Step 2: Convert to fraction form
    521,977.17/720,316.63 = 304,172.22/x
  3. Step 3: Cross multiply
    521,977.17x = 720,316.63 × 304,172.22
  4. Step 4: Simplify right side
    521,977.17x = 219,100,308,450.02
  5. Step 5: Solve for x
    x = 219,100,308,450.02/521,977.17
  6. Step 6: Final answer
    x = 419,750.75

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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.