Home / 377,981.46-521,615.70-208,215.18

Finding the Fourth Proportional to 377,981.46, 521,615.70 and 208,215.18

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Solution

The fourth proportional to 377,981.46, 521,615.70 and 208,215.18 is: 287,337.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,981.46 : 521,615.70 = 208,215.18 : x
  2. Step 2: Convert to fraction form
    377,981.46/521,615.70 = 208,215.18/x
  3. Step 3: Cross multiply
    377,981.46x = 521,615.70 × 208,215.18
  4. Step 4: Simplify right side
    377,981.46x = 108,608,306,866.33
  5. Step 5: Solve for x
    x = 108,608,306,866.33/377,981.46
  6. Step 6: Final answer
    x = 287,337.66

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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.