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Finding the Fourth Proportional to 331,951.46, 456,985.64 and 316,699.70

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Solution

The fourth proportional to 331,951.46, 456,985.64 and 316,699.70 is: 435,989.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,951.46 : 456,985.64 = 316,699.70 : x
  2. Step 2: Convert to fraction form
    331,951.46/456,985.64 = 316,699.70/x
  3. Step 3: Cross multiply
    331,951.46x = 456,985.64 × 316,699.70
  4. Step 4: Simplify right side
    331,951.46x = 144,727,215,092.31
  5. Step 5: Solve for x
    x = 144,727,215,092.31/331,951.46
  6. Step 6: Final answer
    x = 435,989.09

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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.