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Finding the Fourth Proportional to 308,303.63, 425,404.53 and 172,294.10

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Solution

The fourth proportional to 308,303.63, 425,404.53 and 172,294.10 is: 237,735.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,303.63 : 425,404.53 = 172,294.10 : x
  2. Step 2: Convert to fraction form
    308,303.63/425,404.53 = 172,294.10/x
  3. Step 3: Cross multiply
    308,303.63x = 425,404.53 × 172,294.10
  4. Step 4: Simplify right side
    308,303.63x = 73,294,688,505.25
  5. Step 5: Solve for x
    x = 73,294,688,505.25/308,303.63
  6. Step 6: Final answer
    x = 237,735.41

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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.