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Finding the Fourth Proportional to 235,354.83, 352,946.80 and 128,817.51

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Solution

The fourth proportional to 235,354.83, 352,946.80 and 128,817.51 is: 193,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,354.83 : 352,946.80 = 128,817.51 : x
  2. Step 2: Convert to fraction form
    235,354.83/352,946.80 = 128,817.51/x
  3. Step 3: Cross multiply
    235,354.83x = 352,946.80 × 128,817.51
  4. Step 4: Simplify right side
    235,354.83x = 45,465,727,938.47
  5. Step 5: Solve for x
    x = 45,465,727,938.47/235,354.83
  6. Step 6: Final answer
    x = 193,179.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.