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Finding the Fourth Proportional to 381,603.80, 572,405.70 and 353,610.20

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Solution

The fourth proportional to 381,603.80, 572,405.70 and 353,610.20 is: 530,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,603.80 : 572,405.70 = 353,610.20 : x
  2. Step 2: Convert to fraction form
    381,603.80/572,405.70 = 353,610.20/x
  3. Step 3: Cross multiply
    381,603.80x = 572,405.70 × 353,610.20
  4. Step 4: Simplify right side
    381,603.80x = 202,408,494,058.14
  5. Step 5: Solve for x
    x = 202,408,494,058.14/381,603.80
  6. Step 6: Final answer
    x = 530,415.30

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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.