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Finding the Fourth Proportional to 279,615.42, 385,873.77 and 152,291.03

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Solution

The fourth proportional to 279,615.42, 385,873.77 and 152,291.03 is: 210,164.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,615.42 : 385,873.77 = 152,291.03 : x
  2. Step 2: Convert to fraction form
    279,615.42/385,873.77 = 152,291.03/x
  3. Step 3: Cross multiply
    279,615.42x = 385,873.77 × 152,291.03
  4. Step 4: Simplify right side
    279,615.42x = 58,765,111,953.91
  5. Step 5: Solve for x
    x = 58,765,111,953.91/279,615.42
  6. Step 6: Final answer
    x = 210,164.06

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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.