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Finding the Fourth Proportional to 371,555.40, 557,360.43 and 115,354.41

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Solution

The fourth proportional to 371,555.40, 557,360.43 and 115,354.41 is: 173,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,555.40 : 557,360.43 = 115,354.41 : x
  2. Step 2: Convert to fraction form
    371,555.40/557,360.43 = 115,354.41/x
  3. Step 3: Cross multiply
    371,555.40x = 557,360.43 × 115,354.41
  4. Step 4: Simplify right side
    371,555.40x = 64,293,983,560.00
  5. Step 5: Solve for x
    x = 64,293,983,560.00/371,555.40
  6. Step 6: Final answer
    x = 173,040.10

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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.