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Finding the Fourth Proportional to 535,274.80, 738,678.09 and 308,920.30

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Solution

The fourth proportional to 535,274.80, 738,678.09 and 308,920.30 is: 426,309.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,274.80 : 738,678.09 = 308,920.30 : x
  2. Step 2: Convert to fraction form
    535,274.80/738,678.09 = 308,920.30/x
  3. Step 3: Cross multiply
    535,274.80x = 738,678.09 × 308,920.30
  4. Step 4: Simplify right side
    535,274.80x = 228,192,657,166.23
  5. Step 5: Solve for x
    x = 228,192,657,166.23/535,274.80
  6. Step 6: Final answer
    x = 426,309.36

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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.