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Finding the Fourth Proportional to 438,081.20, 656,200.20 and 364,353.20

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Solution

The fourth proportional to 438,081.20, 656,200.20 and 364,353.20 is: 545,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,081.20 : 656,200.20 = 364,353.20 : x
  2. Step 2: Convert to fraction form
    438,081.20/656,200.20 = 364,353.20/x
  3. Step 3: Cross multiply
    438,081.20x = 656,200.20 × 364,353.20
  4. Step 4: Simplify right side
    438,081.20x = 239,088,642,710.64
  5. Step 5: Solve for x
    x = 239,088,642,710.64/438,081.20
  6. Step 6: Final answer
    x = 545,763.30

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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.