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Finding the Fourth Proportional to 515,674.64, 773,522.14 and 178,726.29

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Solution

The fourth proportional to 515,674.64, 773,522.14 and 178,726.29 is: 268,092.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,674.64 : 773,522.14 = 178,726.29 : x
  2. Step 2: Convert to fraction form
    515,674.64/773,522.14 = 178,726.29/x
  3. Step 3: Cross multiply
    515,674.64x = 773,522.14 × 178,726.29
  4. Step 4: Simplify right side
    515,674.64x = 138,248,742,315.06
  5. Step 5: Solve for x
    x = 138,248,742,315.06/515,674.64
  6. Step 6: Final answer
    x = 268,092.96

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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.