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Finding the Fourth Proportional to 281,343, 421,992.42 and 123,572.76

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Solution

The fourth proportional to 281,343, 421,992.42 and 123,572.76 is: 185,349.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,343 : 421,992.42 = 123,572.76 : x
  2. Step 2: Convert to fraction form
    281,343/421,992.42 = 123,572.76/x
  3. Step 3: Cross multiply
    281,343x = 421,992.42 × 123,572.76
  4. Step 4: Simplify right side
    281,343x = 52,146,768,038.48
  5. Step 5: Solve for x
    x = 52,146,768,038.48/281,343
  6. Step 6: Final answer
    x = 185,349.44

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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.