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Finding the Fourth Proportional to 535,276.80, 738,680.85 and 308,922.30

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Solution

The fourth proportional to 535,276.80, 738,680.85 and 308,922.30 is: 426,312.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,276.80 : 738,680.85 = 308,922.30 : x
  2. Step 2: Convert to fraction form
    535,276.80/738,680.85 = 308,922.30/x
  3. Step 3: Cross multiply
    535,276.80x = 738,680.85 × 308,922.30
  4. Step 4: Simplify right side
    535,276.80x = 228,194,987,147.96
  5. Step 5: Solve for x
    x = 228,194,987,147.96/535,276.80
  6. Step 6: Final answer
    x = 426,312.12

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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.