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Finding the Fourth Proportional to 243,813.31, 336,490.28 and 136,410.55

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Solution

The fourth proportional to 243,813.31, 336,490.28 and 136,410.55 is: 188,262.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,813.31 : 336,490.28 = 136,410.55 : x
  2. Step 2: Convert to fraction form
    243,813.31/336,490.28 = 136,410.55/x
  3. Step 3: Cross multiply
    243,813.31x = 336,490.28 × 136,410.55
  4. Step 4: Simplify right side
    243,813.31x = 45,900,824,164.45
  5. Step 5: Solve for x
    x = 45,900,824,164.45/243,813.31
  6. Step 6: Final answer
    x = 188,262.18

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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.