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Finding the Fourth Proportional to 356,791.80, 492,395.45 and 235,720.70

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Solution

The fourth proportional to 356,791.80, 492,395.45 and 235,720.70 is: 325,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,791.80 : 492,395.45 = 235,720.70 : x
  2. Step 2: Convert to fraction form
    356,791.80/492,395.45 = 235,720.70/x
  3. Step 3: Cross multiply
    356,791.80x = 492,395.45 × 235,720.70
  4. Step 4: Simplify right side
    356,791.80x = 116,067,796,510.23
  5. Step 5: Solve for x
    x = 116,067,796,510.23/356,791.80
  6. Step 6: Final answer
    x = 325,309.60

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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.