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Finding the Fourth Proportional to 270,124.20, 405,256.35 and 143,660.45

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Solution

The fourth proportional to 270,124.20, 405,256.35 and 143,660.45 is: 215,527.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,124.20 : 405,256.35 = 143,660.45 : x
  2. Step 2: Convert to fraction form
    270,124.20/405,256.35 = 143,660.45/x
  3. Step 3: Cross multiply
    270,124.20x = 405,256.35 × 143,660.45
  4. Step 4: Simplify right side
    270,124.20x = 58,219,310,619.50
  5. Step 5: Solve for x
    x = 58,219,310,619.50/270,124.20
  6. Step 6: Final answer
    x = 215,527.93

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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.