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Finding the Fourth Proportional to 306,153.64, 459,239.10 and 84,537.64

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Solution

The fourth proportional to 306,153.64, 459,239.10 and 84,537.64 is: 126,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,153.64 : 459,239.10 = 84,537.64 : x
  2. Step 2: Convert to fraction form
    306,153.64/459,239.10 = 84,537.64/x
  3. Step 3: Cross multiply
    306,153.64x = 459,239.10 × 84,537.64
  4. Step 4: Simplify right side
    306,153.64x = 38,822,989,709.72
  5. Step 5: Solve for x
    x = 38,822,989,709.72/306,153.64
  6. Step 6: Final answer
    x = 126,808.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.