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Finding the Fourth Proportional to 308,096.82, 425,173.68 and 172,130.40

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Solution

The fourth proportional to 308,096.82, 425,173.68 and 172,130.40 is: 237,539.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,096.82 : 425,173.68 = 172,130.40 : x
  2. Step 2: Convert to fraction form
    308,096.82/425,173.68 = 172,130.40/x
  3. Step 3: Cross multiply
    308,096.82x = 425,173.68 × 172,130.40
  4. Step 4: Simplify right side
    308,096.82x = 73,185,315,607.87
  5. Step 5: Solve for x
    x = 73,185,315,607.87/308,096.82
  6. Step 6: Final answer
    x = 237,539.99

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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.