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Finding the Fourth Proportional to 353,748.54, 488,161.71 and 210,475.74

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Solution

The fourth proportional to 353,748.54, 488,161.71 and 210,475.74 is: 290,449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,748.54 : 488,161.71 = 210,475.74 : x
  2. Step 2: Convert to fraction form
    353,748.54/488,161.71 = 210,475.74/x
  3. Step 3: Cross multiply
    353,748.54x = 488,161.71 × 210,475.74
  4. Step 4: Simplify right side
    353,748.54x = 102,746,197,151.92
  5. Step 5: Solve for x
    x = 102,746,197,151.92/353,748.54
  6. Step 6: Final answer
    x = 290,449.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.