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Finding the Fourth Proportional to 490,698.68, 736,048.03 and 135,712.70

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Solution

The fourth proportional to 490,698.68, 736,048.03 and 135,712.70 is: 203,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,698.68 : 736,048.03 = 135,712.70 : x
  2. Step 2: Convert to fraction form
    490,698.68/736,048.03 = 135,712.70/x
  3. Step 3: Cross multiply
    490,698.68x = 736,048.03 × 135,712.70
  4. Step 4: Simplify right side
    490,698.68x = 99,891,065,480.98
  5. Step 5: Solve for x
    x = 99,891,065,480.98/490,698.68
  6. Step 6: Final answer
    x = 203,569.05

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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.