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Finding the Fourth Proportional to 330,007.05, 455,416.97 and 186,767.19

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Solution

The fourth proportional to 330,007.05, 455,416.97 and 186,767.19 is: 257,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,007.05 : 455,416.97 = 186,767.19 : x
  2. Step 2: Convert to fraction form
    330,007.05/455,416.97 = 186,767.19/x
  3. Step 3: Cross multiply
    330,007.05x = 455,416.97 × 186,767.19
  4. Step 4: Simplify right side
    330,007.05x = 85,056,946,831.38
  5. Step 5: Solve for x
    x = 85,056,946,831.38/330,007.05
  6. Step 6: Final answer
    x = 257,742.82

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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.