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Finding the Fourth Proportional to 221,038.56, 331,622.54 and 71,275.84

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Solution

The fourth proportional to 221,038.56, 331,622.54 and 71,275.84 is: 106,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,038.56 : 331,622.54 = 71,275.84 : x
  2. Step 2: Convert to fraction form
    221,038.56/331,622.54 = 71,275.84/x
  3. Step 3: Cross multiply
    221,038.56x = 331,622.54 × 71,275.84
  4. Step 4: Simplify right side
    221,038.56x = 23,636,674,094.19
  5. Step 5: Solve for x
    x = 23,636,674,094.19/221,038.56
  6. Step 6: Final answer
    x = 106,934.62

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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.