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Finding the Fourth Proportional to 490,718.40, 736,547.40 and 254,230.80

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Solution

The fourth proportional to 490,718.40, 736,547.40 and 254,230.80 is: 381,589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,718.40 : 736,547.40 = 254,230.80 : x
  2. Step 2: Convert to fraction form
    490,718.40/736,547.40 = 254,230.80/x
  3. Step 3: Cross multiply
    490,718.40x = 736,547.40 × 254,230.80
  4. Step 4: Simplify right side
    490,718.40x = 187,253,034,739.92
  5. Step 5: Solve for x
    x = 187,253,034,739.92/490,718.40
  6. Step 6: Final answer
    x = 381,589.59

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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.