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Finding the Fourth Proportional to 320,472.80, 480,563.40 and 170,674.64

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Solution

The fourth proportional to 320,472.80, 480,563.40 and 170,674.64 is: 255,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,472.80 : 480,563.40 = 170,674.64 : x
  2. Step 2: Convert to fraction form
    320,472.80/480,563.40 = 170,674.64/x
  3. Step 3: Cross multiply
    320,472.80x = 480,563.40 × 170,674.64
  4. Step 4: Simplify right side
    320,472.80x = 82,019,985,292.18
  5. Step 5: Solve for x
    x = 82,019,985,292.18/320,472.80
  6. Step 6: Final answer
    x = 255,934.31

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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.