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Finding the Fourth Proportional to 610,756.20, 916,491.51 and 255,740.49

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Solution

The fourth proportional to 610,756.20, 916,491.51 and 255,740.49 is: 383,760.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,756.20 : 916,491.51 = 255,740.49 : x
  2. Step 2: Convert to fraction form
    610,756.20/916,491.51 = 255,740.49/x
  3. Step 3: Cross multiply
    610,756.20x = 916,491.51 × 255,740.49
  4. Step 4: Simplify right side
    610,756.20x = 234,383,987,848.24
  5. Step 5: Solve for x
    x = 234,383,987,848.24/610,756.20
  6. Step 6: Final answer
    x = 383,760.31

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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.