Home / 305,048.90-420,983.02-175,939.36

Finding the Fourth Proportional to 305,048.90, 420,983.02 and 175,939.36

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Solution

The fourth proportional to 305,048.90, 420,983.02 and 175,939.36 is: 242,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,048.90 : 420,983.02 = 175,939.36 : x
  2. Step 2: Convert to fraction form
    305,048.90/420,983.02 = 175,939.36/x
  3. Step 3: Cross multiply
    305,048.90x = 420,983.02 × 175,939.36
  4. Step 4: Simplify right side
    305,048.90x = 74,067,483,109.67
  5. Step 5: Solve for x
    x = 74,067,483,109.67/305,048.90
  6. Step 6: Final answer
    x = 242,805.28

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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.