Home / 373,275.80-515,128.38-209,935.46

Finding the Fourth Proportional to 373,275.80, 515,128.38 and 209,935.46

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Solution

The fourth proportional to 373,275.80, 515,128.38 and 209,935.46 is: 289,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,275.80 : 515,128.38 = 209,935.46 : x
  2. Step 2: Convert to fraction form
    373,275.80/515,128.38 = 209,935.46/x
  3. Step 3: Cross multiply
    373,275.80x = 515,128.38 × 209,935.46
  4. Step 4: Simplify right side
    373,275.80x = 108,143,713,414.36
  5. Step 5: Solve for x
    x = 108,143,713,414.36/373,275.80
  6. Step 6: Final answer
    x = 289,715.31

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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.