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Finding the Fourth Proportional to 386,034.44, 579,070.11 and 186,522.63

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Solution

The fourth proportional to 386,034.44, 579,070.11 and 186,522.63 is: 279,792.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,034.44 : 579,070.11 = 186,522.63 : x
  2. Step 2: Convert to fraction form
    386,034.44/579,070.11 = 186,522.63/x
  3. Step 3: Cross multiply
    386,034.44x = 579,070.11 × 186,522.63
  4. Step 4: Simplify right side
    386,034.44x = 108,009,679,871.59
  5. Step 5: Solve for x
    x = 108,009,679,871.59/386,034.44
  6. Step 6: Final answer
    x = 279,792.86

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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.