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Finding the Fourth Proportional to 320,505.68, 480,555 and 170,653.52

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Solution

The fourth proportional to 320,505.68, 480,555 and 170,653.52 is: 255,871.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,505.68 : 480,555 = 170,653.52 : x
  2. Step 2: Convert to fraction form
    320,505.68/480,555 = 170,653.52/x
  3. Step 3: Cross multiply
    320,505.68x = 480,555 × 170,653.52
  4. Step 4: Simplify right side
    320,505.68x = 82,008,402,303.60
  5. Step 5: Solve for x
    x = 82,008,402,303.60/320,505.68
  6. Step 6: Final answer
    x = 255,871.92

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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.