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Finding the Fourth Proportional to 658,296.86, 987,357.74 and 258,830.37

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Solution

The fourth proportional to 658,296.86, 987,357.74 and 258,830.37 is: 388,211.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,296.86 : 987,357.74 = 258,830.37 : x
  2. Step 2: Convert to fraction form
    658,296.86/987,357.74 = 258,830.37/x
  3. Step 3: Cross multiply
    658,296.86x = 987,357.74 × 258,830.37
  4. Step 4: Simplify right side
    658,296.86x = 255,558,167,872.41
  5. Step 5: Solve for x
    x = 255,558,167,872.41/658,296.86
  6. Step 6: Final answer
    x = 388,211.13

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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.