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Finding the Fourth Proportional to 400,980.99, 553,326.40 and 235,463.43

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Solution

The fourth proportional to 400,980.99, 553,326.40 and 235,463.43 is: 324,923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,980.99 : 553,326.40 = 235,463.43 : x
  2. Step 2: Convert to fraction form
    400,980.99/553,326.40 = 235,463.43/x
  3. Step 3: Cross multiply
    400,980.99x = 553,326.40 × 235,463.43
  4. Step 4: Simplify right side
    400,980.99x = 130,288,132,053.55
  5. Step 5: Solve for x
    x = 130,288,132,053.55/400,980.99
  6. Step 6: Final answer
    x = 324,923.46

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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.