Home / 279,109.02-385,161.43-158,261.07

Finding the Fourth Proportional to 279,109.02, 385,161.43 and 158,261.07

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Solution

The fourth proportional to 279,109.02, 385,161.43 and 158,261.07 is: 218,395.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,109.02 : 385,161.43 = 158,261.07 : x
  2. Step 2: Convert to fraction form
    279,109.02/385,161.43 = 158,261.07/x
  3. Step 3: Cross multiply
    279,109.02x = 385,161.43 × 158,261.07
  4. Step 4: Simplify right side
    279,109.02x = 60,956,060,034.53
  5. Step 5: Solve for x
    x = 60,956,060,034.53/279,109.02
  6. Step 6: Final answer
    x = 218,395.16

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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.