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Finding the Fourth Proportional to 235,394.30, 352,980.15 and 85,530.14

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Solution

The fourth proportional to 235,394.30, 352,980.15 and 85,530.14 is: 128,254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,394.30 : 352,980.15 = 85,530.14 : x
  2. Step 2: Convert to fraction form
    235,394.30/352,980.15 = 85,530.14/x
  3. Step 3: Cross multiply
    235,394.30x = 352,980.15 × 85,530.14
  4. Step 4: Simplify right side
    235,394.30x = 30,190,441,646.72
  5. Step 5: Solve for x
    x = 30,190,441,646.72/235,394.30
  6. Step 6: Final answer
    x = 128,254.77

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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.