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Finding the Fourth Proportional to 535,272.30, 738,674.64 and 308,917.80

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Solution

The fourth proportional to 535,272.30, 738,674.64 and 308,917.80 is: 426,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,272.30 : 738,674.64 = 308,917.80 : x
  2. Step 2: Convert to fraction form
    535,272.30/738,674.64 = 308,917.80/x
  3. Step 3: Cross multiply
    535,272.30x = 738,674.64 × 308,917.80
  4. Step 4: Simplify right side
    535,272.30x = 228,189,744,704.59
  5. Step 5: Solve for x
    x = 228,189,744,704.59/535,272.30
  6. Step 6: Final answer
    x = 426,305.91

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1.5x scale

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.