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Finding the Fourth Proportional to 235,673.40, 353,300.52 and 85,885.56

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Solution

The fourth proportional to 235,673.40, 353,300.52 and 85,885.56 is: 128,751.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,673.40 : 353,300.52 = 85,885.56 : x
  2. Step 2: Convert to fraction form
    235,673.40/353,300.52 = 85,885.56/x
  3. Step 3: Cross multiply
    235,673.40x = 353,300.52 × 85,885.56
  4. Step 4: Simplify right side
    235,673.40x = 30,343,413,008.49
  5. Step 5: Solve for x
    x = 30,343,413,008.49/235,673.40
  6. Step 6: Final answer
    x = 128,751.96

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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.