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Finding the Fourth Proportional to 433,517.70, 650,276.55 and 208,985.70

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Solution

The fourth proportional to 433,517.70, 650,276.55 and 208,985.70 is: 313,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,517.70 : 650,276.55 = 208,985.70 : x
  2. Step 2: Convert to fraction form
    433,517.70/650,276.55 = 208,985.70/x
  3. Step 3: Cross multiply
    433,517.70x = 650,276.55 × 208,985.70
  4. Step 4: Simplify right side
    433,517.70x = 135,898,499,995.34
  5. Step 5: Solve for x
    x = 135,898,499,995.34/433,517.70
  6. Step 6: Final answer
    x = 313,478.55

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1.5x scale

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.