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Finding the Fourth Proportional to 490,235.49, 735,395.60 and 135,249.50

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Solution

The fourth proportional to 490,235.49, 735,395.60 and 135,249.50 is: 202,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,235.49 : 735,395.60 = 135,249.50 : x
  2. Step 2: Convert to fraction form
    490,235.49/735,395.60 = 135,249.50/x
  3. Step 3: Cross multiply
    490,235.49x = 735,395.60 × 135,249.50
  4. Step 4: Simplify right side
    490,235.49x = 99,461,882,848.97
  5. Step 5: Solve for x
    x = 99,461,882,848.97/490,235.49
  6. Step 6: Final answer
    x = 202,885.93

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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.