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Finding the Fourth Proportional to 517,553.55, 775,368.05 and 281,095.11

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Solution

The fourth proportional to 517,553.55, 775,368.05 and 281,095.11 is: 421,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,553.55 : 775,368.05 = 281,095.11 : x
  2. Step 2: Convert to fraction form
    517,553.55/775,368.05 = 281,095.11/x
  3. Step 3: Cross multiply
    517,553.55x = 775,368.05 × 281,095.11
  4. Step 4: Simplify right side
    517,553.55x = 217,952,165,899.76
  5. Step 5: Solve for x
    x = 217,952,165,899.76/517,553.55
  6. Step 6: Final answer
    x = 421,120.03

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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.