Home / 311,871.07-430,382.33-168,631.21

Finding the Fourth Proportional to 311,871.07, 430,382.33 and 168,631.21

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Solution

The fourth proportional to 311,871.07, 430,382.33 and 168,631.21 is: 232,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,871.07 : 430,382.33 = 168,631.21 : x
  2. Step 2: Convert to fraction form
    311,871.07/430,382.33 = 168,631.21/x
  3. Step 3: Cross multiply
    311,871.07x = 430,382.33 × 168,631.21
  4. Step 4: Simplify right side
    311,871.07x = 72,575,893,070.52
  5. Step 5: Solve for x
    x = 72,575,893,070.52/311,871.07
  6. Step 6: Final answer
    x = 232,711.21

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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.