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Finding the Fourth Proportional to 281,001.76, 421,071.72 and 190,929.76

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Solution

The fourth proportional to 281,001.76, 421,071.72 and 190,929.76 is: 286,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,001.76 : 421,071.72 = 190,929.76 : x
  2. Step 2: Convert to fraction form
    281,001.76/421,071.72 = 190,929.76/x
  3. Step 3: Cross multiply
    281,001.76x = 421,071.72 × 190,929.76
  4. Step 4: Simplify right side
    281,001.76x = 80,395,122,442.39
  5. Step 5: Solve for x
    x = 80,395,122,442.39/281,001.76
  6. Step 6: Final answer
    x = 286,101.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.