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Finding the Fourth Proportional to 239,516.76, 359,378.82 and 128,579.16

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Solution

The fourth proportional to 239,516.76, 359,378.82 and 128,579.16 is: 192,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,516.76 : 359,378.82 = 128,579.16 : x
  2. Step 2: Convert to fraction form
    239,516.76/359,378.82 = 128,579.16/x
  3. Step 3: Cross multiply
    239,516.76x = 359,378.82 × 128,579.16
  4. Step 4: Simplify right side
    239,516.76x = 46,208,626,797.39
  5. Step 5: Solve for x
    x = 46,208,626,797.39/239,516.76
  6. Step 6: Final answer
    x = 192,924.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.