Home / 402,209.06-603,312.92-102,689.70

Finding the Fourth Proportional to 402,209.06, 603,312.92 and 102,689.70

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Solution

The fourth proportional to 402,209.06, 603,312.92 and 102,689.70 is: 154,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,209.06 : 603,312.92 = 102,689.70 : x
  2. Step 2: Convert to fraction form
    402,209.06/603,312.92 = 102,689.70/x
  3. Step 3: Cross multiply
    402,209.06x = 603,312.92 × 102,689.70
  4. Step 4: Simplify right side
    402,209.06x = 61,954,022,760.92
  5. Step 5: Solve for x
    x = 61,954,022,760.92/402,209.06
  6. Step 6: Final answer
    x = 154,034.38

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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.