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Finding the Fourth Proportional to 372,271.20, 558,406.80 and 268,072.80

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Solution

The fourth proportional to 372,271.20, 558,406.80 and 268,072.80 is: 402,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,271.20 : 558,406.80 = 268,072.80 : x
  2. Step 2: Convert to fraction form
    372,271.20/558,406.80 = 268,072.80/x
  3. Step 3: Cross multiply
    372,271.20x = 558,406.80 × 268,072.80
  4. Step 4: Simplify right side
    372,271.20x = 149,693,674,415.04
  5. Step 5: Solve for x
    x = 149,693,674,415.04/372,271.20
  6. Step 6: Final answer
    x = 402,109.20

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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.