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Finding the Fourth Proportional to 351,603.56, 527,347.02 and 126,920.90

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Solution

The fourth proportional to 351,603.56, 527,347.02 and 126,920.90 is: 190,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,603.56 : 527,347.02 = 126,920.90 : x
  2. Step 2: Convert to fraction form
    351,603.56/527,347.02 = 126,920.90/x
  3. Step 3: Cross multiply
    351,603.56x = 527,347.02 × 126,920.90
  4. Step 4: Simplify right side
    351,603.56x = 66,931,358,390.72
  5. Step 5: Solve for x
    x = 66,931,358,390.72/351,603.56
  6. Step 6: Final answer
    x = 190,360.30

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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.