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Finding the Fourth Proportional to 357,996.02, 493,911.56 and 221,981.02

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Solution

The fourth proportional to 357,996.02, 493,911.56 and 221,981.02 is: 306,257.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,996.02 : 493,911.56 = 221,981.02 : x
  2. Step 2: Convert to fraction form
    357,996.02/493,911.56 = 221,981.02/x
  3. Step 3: Cross multiply
    357,996.02x = 493,911.56 × 221,981.02
  4. Step 4: Simplify right side
    357,996.02x = 109,638,991,198.77
  5. Step 5: Solve for x
    x = 109,638,991,198.77/357,996.02
  6. Step 6: Final answer
    x = 306,257.57

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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.