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Finding the Fourth Proportional to 321,758.79, 482,735.04 and 290,019.93

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Solution

The fourth proportional to 321,758.79, 482,735.04 and 290,019.93 is: 435,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,758.79 : 482,735.04 = 290,019.93 : x
  2. Step 2: Convert to fraction form
    321,758.79/482,735.04 = 290,019.93/x
  3. Step 3: Cross multiply
    321,758.79x = 482,735.04 × 290,019.93
  4. Step 4: Simplify right side
    321,758.79x = 140,002,782,509.35
  5. Step 5: Solve for x
    x = 140,002,782,509.35/321,758.79
  6. Step 6: Final answer
    x = 435,117.20

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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.