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Finding the Fourth Proportional to 356,788.80, 492,391.31 and 235,717.70

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Solution

The fourth proportional to 356,788.80, 492,391.31 and 235,717.70 is: 325,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,788.80 : 492,391.31 = 235,717.70 : x
  2. Step 2: Convert to fraction form
    356,788.80/492,391.31 = 235,717.70/x
  3. Step 3: Cross multiply
    356,788.80x = 492,391.31 × 235,717.70
  4. Step 4: Simplify right side
    356,788.80x = 116,065,343,452.64
  5. Step 5: Solve for x
    x = 116,065,343,452.64/356,788.80
  6. Step 6: Final answer
    x = 325,305.46

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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.