Home / 418,240.98-627,360.21-118,721.81

Finding the Fourth Proportional to 418,240.98, 627,360.21 and 118,721.81

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Solution

The fourth proportional to 418,240.98, 627,360.21 and 118,721.81 is: 178,082.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,240.98 : 627,360.21 = 118,721.81 : x
  2. Step 2: Convert to fraction form
    418,240.98/627,360.21 = 118,721.81/x
  3. Step 3: Cross multiply
    418,240.98x = 627,360.21 × 118,721.81
  4. Step 4: Simplify right side
    418,240.98x = 74,481,341,221.58
  5. Step 5: Solve for x
    x = 74,481,341,221.58/418,240.98
  6. Step 6: Final answer
    x = 178,082.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.