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Finding the Fourth Proportional to 272,040.20, 408,060.30 and 105,720.20

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Solution

The fourth proportional to 272,040.20, 408,060.30 and 105,720.20 is: 158,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,040.20 : 408,060.30 = 105,720.20 : x
  2. Step 2: Convert to fraction form
    272,040.20/408,060.30 = 105,720.20/x
  3. Step 3: Cross multiply
    272,040.20x = 408,060.30 × 105,720.20
  4. Step 4: Simplify right side
    272,040.20x = 43,140,216,528.06
  5. Step 5: Solve for x
    x = 43,140,216,528.06/272,040.20
  6. Step 6: Final answer
    x = 158,580.30

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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.