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Finding the Fourth Proportional to 235,248.50, 352,784.36 and 85,451.76

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Solution

The fourth proportional to 235,248.50, 352,784.36 and 85,451.76 is: 128,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,248.50 : 352,784.36 = 85,451.76 : x
  2. Step 2: Convert to fraction form
    235,248.50/352,784.36 = 85,451.76/x
  3. Step 3: Cross multiply
    235,248.50x = 352,784.36 × 85,451.76
  4. Step 4: Simplify right side
    235,248.50x = 30,146,044,676.10
  5. Step 5: Solve for x
    x = 30,146,044,676.10/235,248.50
  6. Step 6: Final answer
    x = 128,145.53

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1.5x scale

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.