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Finding the Fourth Proportional to 420,045.82, 579,706.98 and 258,896.73

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Solution

The fourth proportional to 420,045.82, 579,706.98 and 258,896.73 is: 357,304.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,045.82 : 579,706.98 = 258,896.73 : x
  2. Step 2: Convert to fraction form
    420,045.82/579,706.98 = 258,896.73/x
  3. Step 3: Cross multiply
    420,045.82x = 579,706.98 × 258,896.73
  4. Step 4: Simplify right side
    420,045.82x = 150,084,237,791.94
  5. Step 5: Solve for x
    x = 150,084,237,791.94/420,045.82
  6. Step 6: Final answer
    x = 357,304.44

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1.5x scale

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.