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Finding the Fourth Proportional to 285,104.60, 427,656.54 and 131,215.13

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Solution

The fourth proportional to 285,104.60, 427,656.54 and 131,215.13 is: 196,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,104.60 : 427,656.54 = 131,215.13 : x
  2. Step 2: Convert to fraction form
    285,104.60/427,656.54 = 131,215.13/x
  3. Step 3: Cross multiply
    285,104.60x = 427,656.54 × 131,215.13
  4. Step 4: Simplify right side
    285,104.60x = 56,115,006,353.17
  5. Step 5: Solve for x
    x = 56,115,006,353.17/285,104.60
  6. Step 6: Final answer
    x = 196,822.53

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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.