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Finding the Fourth Proportional to 306,047.10, 459,034.11 and 81,424.02

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Solution

The fourth proportional to 306,047.10, 459,034.11 and 81,424.02 is: 122,126.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,047.10 : 459,034.11 = 81,424.02 : x
  2. Step 2: Convert to fraction form
    306,047.10/459,034.11 = 81,424.02/x
  3. Step 3: Cross multiply
    306,047.10x = 459,034.11 × 81,424.02
  4. Step 4: Simplify right side
    306,047.10x = 37,376,402,553.32
  5. Step 5: Solve for x
    x = 37,376,402,553.32/306,047.10
  6. Step 6: Final answer
    x = 122,126.31

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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.