Home / 212,051.02-318,076.32-54,279.22

Finding the Fourth Proportional to 212,051.02, 318,076.32 and 54,279.22

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Solution

The fourth proportional to 212,051.02, 318,076.32 and 54,279.22 is: 81,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,051.02 : 318,076.32 = 54,279.22 : x
  2. Step 2: Convert to fraction form
    212,051.02/318,076.32 = 54,279.22/x
  3. Step 3: Cross multiply
    212,051.02x = 318,076.32 × 54,279.22
  4. Step 4: Simplify right side
    212,051.02x = 17,264,934,550.07
  5. Step 5: Solve for x
    x = 17,264,934,550.07/212,051.02
  6. Step 6: Final answer
    x = 81,418.78

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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.