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Finding the Fourth Proportional to 612,559.86, 918,840.87 and 238,582.86

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Solution

The fourth proportional to 612,559.86, 918,840.87 and 238,582.86 is: 357,874.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,559.86 : 918,840.87 = 238,582.86 : x
  2. Step 2: Convert to fraction form
    612,559.86/918,840.87 = 238,582.86/x
  3. Step 3: Cross multiply
    612,559.86x = 918,840.87 × 238,582.86
  4. Step 4: Simplify right side
    612,559.86x = 219,219,682,649.49
  5. Step 5: Solve for x
    x = 219,219,682,649.49/612,559.86
  6. Step 6: Final answer
    x = 357,874.71

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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.