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Finding the Fourth Proportional to 235,381, 353,071.50 and 69,169

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Solution

The fourth proportional to 235,381, 353,071.50 and 69,169 is: 103,753.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,381 : 353,071.50 = 69,169 : x
  2. Step 2: Convert to fraction form
    235,381/353,071.50 = 69,169/x
  3. Step 3: Cross multiply
    235,381x = 353,071.50 × 69,169
  4. Step 4: Simplify right side
    235,381x = 24,421,602,583.50
  5. Step 5: Solve for x
    x = 24,421,602,583.50/235,381
  6. Step 6: Final answer
    x = 103,753.50

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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.