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Finding the Fourth Proportional to 338,978.88, 508,467.84 and 316,559.04

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Solution

The fourth proportional to 338,978.88, 508,467.84 and 316,559.04 is: 474,838.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,978.88 : 508,467.84 = 316,559.04 : x
  2. Step 2: Convert to fraction form
    338,978.88/508,467.84 = 316,559.04/x
  3. Step 3: Cross multiply
    338,978.88x = 508,467.84 × 316,559.04
  4. Step 4: Simplify right side
    338,978.88x = 160,960,091,301.27
  5. Step 5: Solve for x
    x = 160,960,091,301.27/338,978.88
  6. Step 6: Final answer
    x = 474,838.11

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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.