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Finding the Fourth Proportional to 243,845.64, 336,491.28 and 136,397.16

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Solution

The fourth proportional to 243,845.64, 336,491.28 and 136,397.16 is: 188,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,845.64 : 336,491.28 = 136,397.16 : x
  2. Step 2: Convert to fraction form
    243,845.64/336,491.28 = 136,397.16/x
  3. Step 3: Cross multiply
    243,845.64x = 336,491.28 × 136,397.16
  4. Step 4: Simplify right side
    243,845.64x = 45,896,454,956.76
  5. Step 5: Solve for x
    x = 45,896,454,956.76/243,845.64
  6. Step 6: Final answer
    x = 188,219.30

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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.