Home / 279,021.20-385,051.98-151,699.52

Finding the Fourth Proportional to 279,021.20, 385,051.98 and 151,699.52

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Solution

The fourth proportional to 279,021.20, 385,051.98 and 151,699.52 is: 209,346.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,021.20 : 385,051.98 = 151,699.52 : x
  2. Step 2: Convert to fraction form
    279,021.20/385,051.98 = 151,699.52/x
  3. Step 3: Cross multiply
    279,021.20x = 385,051.98 × 151,699.52
  4. Step 4: Simplify right side
    279,021.20x = 58,412,198,615.79
  5. Step 5: Solve for x
    x = 58,412,198,615.79/279,021.20
  6. Step 6: Final answer
    x = 209,346.82

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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.