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Finding the Fourth Proportional to 360,354.28, 540,619.52 and 253,945.80

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Solution

The fourth proportional to 360,354.28, 540,619.52 and 253,945.80 is: 380,980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,354.28 : 540,619.52 = 253,945.80 : x
  2. Step 2: Convert to fraction form
    360,354.28/540,619.52 = 253,945.80/x
  3. Step 3: Cross multiply
    360,354.28x = 540,619.52 × 253,945.80
  4. Step 4: Simplify right side
    360,354.28x = 137,288,056,502.02
  5. Step 5: Solve for x
    x = 137,288,056,502.02/360,354.28
  6. Step 6: Final answer
    x = 380,980.79

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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.