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Finding the Fourth Proportional to 370,649.73, 511,505.49 and 209,505.39

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Solution

The fourth proportional to 370,649.73, 511,505.49 and 209,505.39 is: 289,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,649.73 : 511,505.49 = 209,505.39 : x
  2. Step 2: Convert to fraction form
    370,649.73/511,505.49 = 209,505.39/x
  3. Step 3: Cross multiply
    370,649.73x = 511,505.49 × 209,505.39
  4. Step 4: Simplify right side
    370,649.73x = 107,163,157,169.59
  5. Step 5: Solve for x
    x = 107,163,157,169.59/370,649.73
  6. Step 6: Final answer
    x = 289,122.45

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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.