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Finding the Fourth Proportional to 418,166.12, 626,636.82 and 207,383.06

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Solution

The fourth proportional to 418,166.12, 626,636.82 and 207,383.06 is: 310,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,166.12 : 626,636.82 = 207,383.06 : x
  2. Step 2: Convert to fraction form
    418,166.12/626,636.82 = 207,383.06/x
  3. Step 3: Cross multiply
    418,166.12x = 626,636.82 × 207,383.06
  4. Step 4: Simplify right side
    418,166.12x = 129,953,861,240.27
  5. Step 5: Solve for x
    x = 129,953,861,240.27/418,166.12
  6. Step 6: Final answer
    x = 310,770.90

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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.