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Finding the Fourth Proportional to 328,168.58, 492,139.02 and 114,931.79

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Solution

The fourth proportional to 328,168.58, 492,139.02 and 114,931.79 is: 172,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,168.58 : 492,139.02 = 114,931.79 : x
  2. Step 2: Convert to fraction form
    328,168.58/492,139.02 = 114,931.79/x
  3. Step 3: Cross multiply
    328,168.58x = 492,139.02 × 114,931.79
  4. Step 4: Simplify right side
    328,168.58x = 56,562,415,959.39
  5. Step 5: Solve for x
    x = 56,562,415,959.39/328,168.58
  6. Step 6: Final answer
    x = 172,357.80

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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.