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Finding the Fourth Proportional to 320,688.24, 480,890.22 and 170,900.64

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Solution

The fourth proportional to 320,688.24, 480,890.22 and 170,900.64 is: 256,275.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,688.24 : 480,890.22 = 170,900.64 : x
  2. Step 2: Convert to fraction form
    320,688.24/480,890.22 = 170,900.64/x
  3. Step 3: Cross multiply
    320,688.24x = 480,890.22 × 170,900.64
  4. Step 4: Simplify right side
    320,688.24x = 82,184,446,367.74
  5. Step 5: Solve for x
    x = 82,184,446,367.74/320,688.24
  6. Step 6: Final answer
    x = 256,275.21

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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.