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Finding the Fourth Proportional to 352,124.32, 485,930.16 and 190,978.72

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Solution

The fourth proportional to 352,124.32, 485,930.16 and 190,978.72 is: 263,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,124.32 : 485,930.16 = 190,978.72 : x
  2. Step 2: Convert to fraction form
    352,124.32/485,930.16 = 190,978.72/x
  3. Step 3: Cross multiply
    352,124.32x = 485,930.16 × 190,978.72
  4. Step 4: Simplify right side
    352,124.32x = 92,802,319,966.20
  5. Step 5: Solve for x
    x = 92,802,319,966.20/352,124.32
  6. Step 6: Final answer
    x = 263,549.87

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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.