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Finding the Fourth Proportional to 330,346.64, 455,870.72 and 192,516.80

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Solution

The fourth proportional to 330,346.64, 455,870.72 and 192,516.80 is: 265,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,346.64 : 455,870.72 = 192,516.80 : x
  2. Step 2: Convert to fraction form
    330,346.64/455,870.72 = 192,516.80/x
  3. Step 3: Cross multiply
    330,346.64x = 455,870.72 × 192,516.80
  4. Step 4: Simplify right side
    330,346.64x = 87,762,770,430.03
  5. Step 5: Solve for x
    x = 87,762,770,430.03/330,346.64
  6. Step 6: Final answer
    x = 265,668.72

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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.