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Finding the Fourth Proportional to 304,870.47, 420,687.19 and 168,870.67

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Solution

The fourth proportional to 304,870.47, 420,687.19 and 168,870.67 is: 233,022.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,870.47 : 420,687.19 = 168,870.67 : x
  2. Step 2: Convert to fraction form
    304,870.47/420,687.19 = 168,870.67/x
  3. Step 3: Cross multiply
    304,870.47x = 420,687.19 × 168,870.67
  4. Step 4: Simplify right side
    304,870.47x = 71,041,727,635.72
  5. Step 5: Solve for x
    x = 71,041,727,635.72/304,870.47
  6. Step 6: Final answer
    x = 233,022.66

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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.