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Finding the Fourth Proportional to 371,556.96, 557,226.02 and 105,340.72

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Solution

The fourth proportional to 371,556.96, 557,226.02 and 105,340.72 is: 157,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,556.96 : 557,226.02 = 105,340.72 : x
  2. Step 2: Convert to fraction form
    371,556.96/557,226.02 = 105,340.72/x
  3. Step 3: Cross multiply
    371,556.96x = 557,226.02 × 105,340.72
  4. Step 4: Simplify right side
    371,556.96x = 58,698,590,149.53
  5. Step 5: Solve for x
    x = 58,698,590,149.53/371,556.96
  6. Step 6: Final answer
    x = 157,980.06

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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.