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Finding the Fourth Proportional to 535,276.48, 738,628.32 and 308,994.88

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Solution

The fourth proportional to 535,276.48, 738,628.32 and 308,994.88 is: 426,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,276.48 : 738,628.32 = 308,994.88 : x
  2. Step 2: Convert to fraction form
    535,276.48/738,628.32 = 308,994.88/x
  3. Step 3: Cross multiply
    535,276.48x = 738,628.32 × 308,994.88
  4. Step 4: Simplify right side
    535,276.48x = 228,232,369,103.00
  5. Step 5: Solve for x
    x = 228,232,369,103.00/535,276.48
  6. Step 6: Final answer
    x = 426,382.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.