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Finding the Fourth Proportional to 610,888.96, 916,396.32 and 211,528.96

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Solution

The fourth proportional to 610,888.96, 916,396.32 and 211,528.96 is: 317,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,888.96 : 916,396.32 = 211,528.96 : x
  2. Step 2: Convert to fraction form
    610,888.96/916,396.32 = 211,528.96/x
  3. Step 3: Cross multiply
    610,888.96x = 916,396.32 × 211,528.96
  4. Step 4: Simplify right side
    610,888.96x = 193,844,360,517.43
  5. Step 5: Solve for x
    x = 193,844,360,517.43/610,888.96
  6. Step 6: Final answer
    x = 317,315.21

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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.