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Finding the Fourth Proportional to 315,645.33, 435,603.24 and 172,411.41

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Solution

The fourth proportional to 315,645.33, 435,603.24 and 172,411.41 is: 237,934.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,645.33 : 435,603.24 = 172,411.41 : x
  2. Step 2: Convert to fraction form
    315,645.33/435,603.24 = 172,411.41/x
  3. Step 3: Cross multiply
    315,645.33x = 435,603.24 × 172,411.41
  4. Step 4: Simplify right side
    315,645.33x = 75,102,968,808.97
  5. Step 5: Solve for x
    x = 75,102,968,808.97/315,645.33
  6. Step 6: Final answer
    x = 237,934.67

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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.