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Finding the Fourth Proportional to 490,848.80, 735,884.40 and 210,135.20

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Solution

The fourth proportional to 490,848.80, 735,884.40 and 210,135.20 is: 315,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,848.80 : 735,884.40 = 210,135.20 : x
  2. Step 2: Convert to fraction form
    490,848.80/735,884.40 = 210,135.20/x
  3. Step 3: Cross multiply
    490,848.80x = 735,884.40 × 210,135.20
  4. Step 4: Simplify right side
    490,848.80x = 154,635,215,570.88
  5. Step 5: Solve for x
    x = 154,635,215,570.88/490,848.80
  6. Step 6: Final answer
    x = 315,036.35

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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.