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Finding the Fourth Proportional to 320,296.64, 480,438.88 and 95,657.72

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Solution

The fourth proportional to 320,296.64, 480,438.88 and 95,657.72 is: 143,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,296.64 : 480,438.88 = 95,657.72 : x
  2. Step 2: Convert to fraction form
    320,296.64/480,438.88 = 95,657.72/x
  3. Step 3: Cross multiply
    320,296.64x = 480,438.88 × 95,657.72
  4. Step 4: Simplify right side
    320,296.64x = 45,957,685,218.81
  5. Step 5: Solve for x
    x = 45,957,685,218.81/320,296.64
  6. Step 6: Final answer
    x = 143,484.76

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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.