Home / 311,731.02-430,188.70-168,491.06

Finding the Fourth Proportional to 311,731.02, 430,188.70 and 168,491.06

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Solution

The fourth proportional to 311,731.02, 430,188.70 and 168,491.06 is: 232,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,731.02 : 430,188.70 = 168,491.06 : x
  2. Step 2: Convert to fraction form
    311,731.02/430,188.70 = 168,491.06/x
  3. Step 3: Cross multiply
    311,731.02x = 430,188.70 × 168,491.06
  4. Step 4: Simplify right side
    311,731.02x = 72,482,950,063.02
  5. Step 5: Solve for x
    x = 72,482,950,063.02/311,731.02
  6. Step 6: Final answer
    x = 232,517.60

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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.