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Finding the Fourth Proportional to 346,722.68, 478,486.78 and 195,819.68

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Solution

The fourth proportional to 346,722.68, 478,486.78 and 195,819.68 is: 270,236.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,722.68 : 478,486.78 = 195,819.68 : x
  2. Step 2: Convert to fraction form
    346,722.68/478,486.78 = 195,819.68/x
  3. Step 3: Cross multiply
    346,722.68x = 478,486.78 × 195,819.68
  4. Step 4: Simplify right side
    346,722.68x = 93,697,128,143.83
  5. Step 5: Solve for x
    x = 93,697,128,143.83/346,722.68
  6. Step 6: Final answer
    x = 270,236.51

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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.