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Finding the Fourth Proportional to 501,901.72, 692,629.36 and 272,460.78

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Solution

The fourth proportional to 501,901.72, 692,629.36 and 272,460.78 is: 375,998.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,901.72 : 692,629.36 = 272,460.78 : x
  2. Step 2: Convert to fraction form
    501,901.72/692,629.36 = 272,460.78/x
  3. Step 3: Cross multiply
    501,901.72x = 692,629.36 × 272,460.78
  4. Step 4: Simplify right side
    501,901.72x = 188,714,335,676.50
  5. Step 5: Solve for x
    x = 188,714,335,676.50/501,901.72
  6. Step 6: Final answer
    x = 375,998.58

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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.