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Finding the Fourth Proportional to 304,871.47, 420,688.57 and 168,871.67

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Solution

The fourth proportional to 304,871.47, 420,688.57 and 168,871.67 is: 233,024.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,871.47 : 420,688.57 = 168,871.67 : x
  2. Step 2: Convert to fraction form
    304,871.47/420,688.57 = 168,871.67/x
  3. Step 3: Cross multiply
    304,871.47x = 420,688.57 × 168,871.67
  4. Step 4: Simplify right side
    304,871.47x = 71,042,381,365.81
  5. Step 5: Solve for x
    x = 71,042,381,365.81/304,871.47
  6. Step 6: Final answer
    x = 233,024.04

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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.