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Finding the Fourth Proportional to 311,555.76, 430,090.47 and 182,476.32

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Solution

The fourth proportional to 311,555.76, 430,090.47 and 182,476.32 is: 251,901.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,555.76 : 430,090.47 = 182,476.32 : x
  2. Step 2: Convert to fraction form
    311,555.76/430,090.47 = 182,476.32/x
  3. Step 3: Cross multiply
    311,555.76x = 430,090.47 × 182,476.32
  4. Step 4: Simplify right side
    311,555.76x = 78,481,326,232.67
  5. Step 5: Solve for x
    x = 78,481,326,232.67/311,555.76
  6. Step 6: Final answer
    x = 251,901.38

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1.5x scale

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.