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Finding the Fourth Proportional to 281,036.10, 421,554.15 and 281,036.10

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Solution

The fourth proportional to 281,036.10, 421,554.15 and 281,036.10 is: 421,554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,036.10 : 421,554.15 = 281,036.10 : x
  2. Step 2: Convert to fraction form
    281,036.10/421,554.15 = 281,036.10/x
  3. Step 3: Cross multiply
    281,036.10x = 421,554.15 × 281,036.10
  4. Step 4: Simplify right side
    281,036.10x = 118,471,934,254.82
  5. Step 5: Solve for x
    x = 118,471,934,254.82/281,036.10
  6. Step 6: Final answer
    x = 421,554.15

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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.