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Finding the Fourth Proportional to 435,783.98, 653,713.67 and 120,240.85

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Solution

The fourth proportional to 435,783.98, 653,713.67 and 120,240.85 is: 180,371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,783.98 : 653,713.67 = 120,240.85 : x
  2. Step 2: Convert to fraction form
    435,783.98/653,713.67 = 120,240.85/x
  3. Step 3: Cross multiply
    435,783.98x = 653,713.67 × 120,240.85
  4. Step 4: Simplify right side
    435,783.98x = 78,603,087,337.42
  5. Step 5: Solve for x
    x = 78,603,087,337.42/435,783.98
  6. Step 6: Final answer
    x = 180,371.68

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1.5x scale

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.