Home / 279,072.08-385,126.80-151,755.20

Finding the Fourth Proportional to 279,072.08, 385,126.80 and 151,755.20

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Solution

The fourth proportional to 279,072.08, 385,126.80 and 151,755.20 is: 209,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,072.08 : 385,126.80 = 151,755.20 : x
  2. Step 2: Convert to fraction form
    279,072.08/385,126.80 = 151,755.20/x
  3. Step 3: Cross multiply
    279,072.08x = 385,126.80 × 151,755.20
  4. Step 4: Simplify right side
    279,072.08x = 58,444,994,559.36
  5. Step 5: Solve for x
    x = 58,444,994,559.36/279,072.08
  6. Step 6: Final answer
    x = 209,426.16

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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.