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Finding the Fourth Proportional to 243,782.56, 336,386.32 and 136,347.04

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Solution

The fourth proportional to 243,782.56, 336,386.32 and 136,347.04 is: 188,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,782.56 : 336,386.32 = 136,347.04 : x
  2. Step 2: Convert to fraction form
    243,782.56/336,386.32 = 136,347.04/x
  3. Step 3: Cross multiply
    243,782.56x = 336,386.32 × 136,347.04
  4. Step 4: Simplify right side
    243,782.56x = 45,865,279,028.49
  5. Step 5: Solve for x
    x = 45,865,279,028.49/243,782.56
  6. Step 6: Final answer
    x = 188,140.12

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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.