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Finding the Fourth Proportional to 308,109.57, 425,188.28 and 172,166.94

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Solution

The fourth proportional to 308,109.57, 425,188.28 and 172,166.94 is: 237,588.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,109.57 : 425,188.28 = 172,166.94 : x
  2. Step 2: Convert to fraction form
    308,109.57/425,188.28 = 172,166.94/x
  3. Step 3: Cross multiply
    308,109.57x = 425,188.28 × 172,166.94
  4. Step 4: Simplify right side
    308,109.57x = 73,203,364,230.63
  5. Step 5: Solve for x
    x = 73,203,364,230.63/308,109.57
  6. Step 6: Final answer
    x = 237,588.74

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1.5x scale

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.