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Finding the Fourth Proportional to 265,212.42, 397,855.28 and 85,302.91

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Solution

The fourth proportional to 265,212.42, 397,855.28 and 85,302.91 is: 127,966.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,212.42 : 397,855.28 = 85,302.91 : x
  2. Step 2: Convert to fraction form
    265,212.42/397,855.28 = 85,302.91/x
  3. Step 3: Cross multiply
    265,212.42x = 397,855.28 × 85,302.91
  4. Step 4: Simplify right side
    265,212.42x = 33,938,213,142.86
  5. Step 5: Solve for x
    x = 33,938,213,142.86/265,212.42
  6. Step 6: Final answer
    x = 127,966.15

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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.