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Finding the Fourth Proportional to 309,529.73, 427,168.82 and 173,607.28

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Solution

The fourth proportional to 309,529.73, 427,168.82 and 173,607.28 is: 239,588.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,529.73 : 427,168.82 = 173,607.28 : x
  2. Step 2: Convert to fraction form
    309,529.73/427,168.82 = 173,607.28/x
  3. Step 3: Cross multiply
    309,529.73x = 427,168.82 × 173,607.28
  4. Step 4: Simplify right side
    309,529.73x = 74,159,613,937.13
  5. Step 5: Solve for x
    x = 74,159,613,937.13/309,529.73
  6. Step 6: Final answer
    x = 239,588.02

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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.