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Finding the Fourth Proportional to 399,430.51, 551,141.04 and 227,338.30

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Solution

The fourth proportional to 399,430.51, 551,141.04 and 227,338.30 is: 313,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,430.51 : 551,141.04 = 227,338.30 : x
  2. Step 2: Convert to fraction form
    399,430.51/551,141.04 = 227,338.30/x
  3. Step 3: Cross multiply
    399,430.51x = 551,141.04 × 227,338.30
  4. Step 4: Simplify right side
    399,430.51x = 125,295,467,093.83
  5. Step 5: Solve for x
    x = 125,295,467,093.83/399,430.51
  6. Step 6: Final answer
    x = 313,685.27

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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.