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Finding the Fourth Proportional to 379,151.99, 523,225.40 and 218,007.68

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Solution

The fourth proportional to 379,151.99, 523,225.40 and 218,007.68 is: 300,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,151.99 : 523,225.40 = 218,007.68 : x
  2. Step 2: Convert to fraction form
    379,151.99/523,225.40 = 218,007.68/x
  3. Step 3: Cross multiply
    379,151.99x = 523,225.40 × 218,007.68
  4. Step 4: Simplify right side
    379,151.99x = 114,067,153,949.63
  5. Step 5: Solve for x
    x = 114,067,153,949.63/379,151.99
  6. Step 6: Final answer
    x = 300,848.10

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1.5x scale

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.