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Finding the Fourth Proportional to 371,676.40, 557,535.72 and 105,415.84

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Solution

The fourth proportional to 371,676.40, 557,535.72 and 105,415.84 is: 158,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,676.40 : 557,535.72 = 105,415.84 : x
  2. Step 2: Convert to fraction form
    371,676.40/557,535.72 = 105,415.84/x
  3. Step 3: Cross multiply
    371,676.40x = 557,535.72 × 105,415.84
  4. Step 4: Simplify right side
    371,676.40x = 58,773,096,253.80
  5. Step 5: Solve for x
    x = 58,773,096,253.80/371,676.40
  6. Step 6: Final answer
    x = 158,129.75

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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.