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Finding the Fourth Proportional to 610,988.34, 915,398.19 and 255,219.42

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Solution

The fourth proportional to 610,988.34, 915,398.19 and 255,219.42 is: 382,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,988.34 : 915,398.19 = 255,219.42 : x
  2. Step 2: Convert to fraction form
    610,988.34/915,398.19 = 255,219.42/x
  3. Step 3: Cross multiply
    610,988.34x = 915,398.19 × 255,219.42
  4. Step 4: Simplify right side
    610,988.34x = 233,627,395,120.85
  5. Step 5: Solve for x
    x = 233,627,395,120.85/610,988.34
  6. Step 6: Final answer
    x = 382,376.19

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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.