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Finding the Fourth Proportional to 283,670.55, 391,467.74 and 156,346.47

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Solution

The fourth proportional to 283,670.55, 391,467.74 and 156,346.47 is: 215,759.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,670.55 : 391,467.74 = 156,346.47 : x
  2. Step 2: Convert to fraction form
    283,670.55/391,467.74 = 156,346.47/x
  3. Step 3: Cross multiply
    283,670.55x = 391,467.74 × 156,346.47
  4. Step 4: Simplify right side
    283,670.55x = 61,204,598,486.15
  5. Step 5: Solve for x
    x = 61,204,598,486.15/283,670.55
  6. Step 6: Final answer
    x = 215,759.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.