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Finding the Fourth Proportional to 360,009.20, 540,013.80 and 194,121.20

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Solution

The fourth proportional to 360,009.20, 540,013.80 and 194,121.20 is: 291,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,009.20 : 540,013.80 = 194,121.20 : x
  2. Step 2: Convert to fraction form
    360,009.20/540,013.80 = 194,121.20/x
  3. Step 3: Cross multiply
    360,009.20x = 540,013.80 × 194,121.20
  4. Step 4: Simplify right side
    360,009.20x = 104,828,126,872.56
  5. Step 5: Solve for x
    x = 104,828,126,872.56/360,009.20
  6. Step 6: Final answer
    x = 291,181.80

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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.