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Finding the Fourth Proportional to 370,338.78, 511,109.10 and 209,204.22

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Solution

The fourth proportional to 370,338.78, 511,109.10 and 209,204.22 is: 288,725.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,338.78 : 511,109.10 = 209,204.22 : x
  2. Step 2: Convert to fraction form
    370,338.78/511,109.10 = 209,204.22/x
  3. Step 3: Cross multiply
    370,338.78x = 511,109.10 × 209,204.22
  4. Step 4: Simplify right side
    370,338.78x = 106,926,180,600.40
  5. Step 5: Solve for x
    x = 106,926,180,600.40/370,338.78
  6. Step 6: Final answer
    x = 288,725.31

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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.