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Finding the Fourth Proportional to 308,070.48, 425,123.84 and 172,103.84

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Solution

The fourth proportional to 308,070.48, 425,123.84 and 172,103.84 is: 237,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,070.48 : 425,123.84 = 172,103.84 : x
  2. Step 2: Convert to fraction form
    308,070.48/425,123.84 = 172,103.84/x
  3. Step 3: Cross multiply
    308,070.48x = 425,123.84 × 172,103.84
  4. Step 4: Simplify right side
    308,070.48x = 73,165,445,339.55
  5. Step 5: Solve for x
    x = 73,165,445,339.55/308,070.48
  6. Step 6: Final answer
    x = 237,495.80

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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.