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Finding the Fourth Proportional to 304,891.40, 457,620.70 and 155,243.56

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Solution

The fourth proportional to 304,891.40, 457,620.70 and 155,243.56 is: 233,009.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,891.40 : 457,620.70 = 155,243.56 : x
  2. Step 2: Convert to fraction form
    304,891.40/457,620.70 = 155,243.56/x
  3. Step 3: Cross multiply
    304,891.40x = 457,620.70 × 155,243.56
  4. Step 4: Simplify right side
    304,891.40x = 71,042,666,597.69
  5. Step 5: Solve for x
    x = 71,042,666,597.69/304,891.40
  6. Step 6: Final answer
    x = 233,009.74

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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.