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Finding the Fourth Proportional to 418,171.62, 626,645.07 and 207,388.56

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Solution

The fourth proportional to 418,171.62, 626,645.07 and 207,388.56 is: 310,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,171.62 : 626,645.07 = 207,388.56 : x
  2. Step 2: Convert to fraction form
    418,171.62/626,645.07 = 207,388.56/x
  3. Step 3: Cross multiply
    418,171.62x = 626,645.07 × 207,388.56
  4. Step 4: Simplify right side
    418,171.62x = 129,959,018,698.40
  5. Step 5: Solve for x
    x = 129,959,018,698.40/418,171.62
  6. Step 6: Final answer
    x = 310,779.15

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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.