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Finding the Fourth Proportional to 515,407.74, 773,222.74 and 155,548.51

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Solution

The fourth proportional to 515,407.74, 773,222.74 and 155,548.51 is: 233,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,407.74 : 773,222.74 = 155,548.51 : x
  2. Step 2: Convert to fraction form
    515,407.74/773,222.74 = 155,548.51/x
  3. Step 3: Cross multiply
    515,407.74x = 773,222.74 × 155,548.51
  4. Step 4: Simplify right side
    515,407.74x = 120,273,645,105.12
  5. Step 5: Solve for x
    x = 120,273,645,105.12/515,407.74
  6. Step 6: Final answer
    x = 233,356.30

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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.