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Finding the Fourth Proportional to 328,246.40, 491,276.10 and 238,032.65

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Solution

The fourth proportional to 328,246.40, 491,276.10 and 238,032.65 is: 356,256.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,246.40 : 491,276.10 = 238,032.65 : x
  2. Step 2: Convert to fraction form
    328,246.40/491,276.10 = 238,032.65/x
  3. Step 3: Cross multiply
    328,246.40x = 491,276.10 × 238,032.65
  4. Step 4: Simplify right side
    328,246.40x = 116,939,751,964.67
  5. Step 5: Solve for x
    x = 116,939,751,964.67/328,246.40
  6. Step 6: Final answer
    x = 356,256.01

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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.