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Finding the Fourth Proportional to 386,012.84, 579,096.60 and 133,302.56

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Solution

The fourth proportional to 386,012.84, 579,096.60 and 133,302.56 is: 199,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,012.84 : 579,096.60 = 133,302.56 : x
  2. Step 2: Convert to fraction form
    386,012.84/579,096.60 = 133,302.56/x
  3. Step 3: Cross multiply
    386,012.84x = 579,096.60 × 133,302.56
  4. Step 4: Simplify right side
    386,012.84x = 77,195,059,267.30
  5. Step 5: Solve for x
    x = 77,195,059,267.30/386,012.84
  6. Step 6: Final answer
    x = 199,980.55

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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.