Home / 279,162.12-385,208.76-188,714.88

Finding the Fourth Proportional to 279,162.12, 385,208.76 and 188,714.88

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Solution

The fourth proportional to 279,162.12, 385,208.76 and 188,714.88 is: 260,402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,162.12 : 385,208.76 = 188,714.88 : x
  2. Step 2: Convert to fraction form
    279,162.12/385,208.76 = 188,714.88/x
  3. Step 3: Cross multiply
    279,162.12x = 385,208.76 × 188,714.88
  4. Step 4: Simplify right side
    279,162.12x = 72,694,624,918.35
  5. Step 5: Solve for x
    x = 72,694,624,918.35/279,162.12
  6. Step 6: Final answer
    x = 260,402.90

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1.5x scale

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.