Home / 259,830.91-389,875.56-145,907.92

Finding the Fourth Proportional to 259,830.91, 389,875.56 and 145,907.92

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Solution

The fourth proportional to 259,830.91, 389,875.56 and 145,907.92 is: 218,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,830.91 : 389,875.56 = 145,907.92 : x
  2. Step 2: Convert to fraction form
    259,830.91/389,875.56 = 145,907.92/x
  3. Step 3: Cross multiply
    259,830.91x = 389,875.56 × 145,907.92
  4. Step 4: Simplify right side
    259,830.91x = 56,885,932,018.44
  5. Step 5: Solve for x
    x = 56,885,932,018.44/259,830.91
  6. Step 6: Final answer
    x = 218,934.43

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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.