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Finding the Fourth Proportional to 322,437.67, 483,655.92 and 85,780.35

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Solution

The fourth proportional to 322,437.67, 483,655.92 and 85,780.35 is: 128,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,437.67 : 483,655.92 = 85,780.35 : x
  2. Step 2: Convert to fraction form
    322,437.67/483,655.92 = 85,780.35/x
  3. Step 3: Cross multiply
    322,437.67x = 483,655.92 × 85,780.35
  4. Step 4: Simplify right side
    322,437.67x = 41,488,171,678.89
  5. Step 5: Solve for x
    x = 41,488,171,678.89/322,437.67
  6. Step 6: Final answer
    x = 128,670.36

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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.