Home / 485,271.52-669,677.34-281,443.26

Finding the Fourth Proportional to 485,271.52, 669,677.34 and 281,443.26

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Solution

The fourth proportional to 485,271.52, 669,677.34 and 281,443.26 is: 388,393.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,271.52 : 669,677.34 = 281,443.26 : x
  2. Step 2: Convert to fraction form
    485,271.52/669,677.34 = 281,443.26/x
  3. Step 3: Cross multiply
    485,271.52x = 669,677.34 × 281,443.26
  4. Step 4: Simplify right side
    485,271.52x = 188,476,173,717.73
  5. Step 5: Solve for x
    x = 188,476,173,717.73/485,271.52
  6. Step 6: Final answer
    x = 388,393.23

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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.