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Finding the Fourth Proportional to 354,937.20, 531,628.20 and 308,281.20

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Solution

The fourth proportional to 354,937.20, 531,628.20 and 308,281.20 is: 461,746.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,937.20 : 531,628.20 = 308,281.20 : x
  2. Step 2: Convert to fraction form
    354,937.20/531,628.20 = 308,281.20/x
  3. Step 3: Cross multiply
    354,937.20x = 531,628.20 × 308,281.20
  4. Step 4: Simplify right side
    354,937.20x = 163,890,979,449.84
  5. Step 5: Solve for x
    x = 163,890,979,449.84/354,937.20
  6. Step 6: Final answer
    x = 461,746.41

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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.