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Finding the Fourth Proportional to 243,706.75, 336,346.63 and 136,282.79

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Solution

The fourth proportional to 243,706.75, 336,346.63 and 136,282.79 is: 188,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,706.75 : 336,346.63 = 136,282.79 : x
  2. Step 2: Convert to fraction form
    243,706.75/336,346.63 = 136,282.79/x
  3. Step 3: Cross multiply
    243,706.75x = 336,346.63 × 136,282.79
  4. Step 4: Simplify right side
    243,706.75x = 45,838,257,643.66
  5. Step 5: Solve for x
    x = 45,838,257,643.66/243,706.75
  6. Step 6: Final answer
    x = 188,087.77

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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.