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Finding the Fourth Proportional to 272,648.48, 376,242.72 and 156,278.51

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Solution

The fourth proportional to 272,648.48, 376,242.72 and 156,278.51 is: 215,657.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,648.48 : 376,242.72 = 156,278.51 : x
  2. Step 2: Convert to fraction form
    272,648.48/376,242.72 = 156,278.51/x
  3. Step 3: Cross multiply
    272,648.48x = 376,242.72 × 156,278.51
  4. Step 4: Simplify right side
    272,648.48x = 58,798,653,619.03
  5. Step 5: Solve for x
    x = 58,798,653,619.03/272,648.48
  6. Step 6: Final answer
    x = 215,657.37

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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.