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Finding the Fourth Proportional to 555,247.67, 766,257.49 and 313,566.57

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Solution

The fourth proportional to 555,247.67, 766,257.49 and 313,566.57 is: 432,730.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,247.67 : 766,257.49 = 313,566.57 : x
  2. Step 2: Convert to fraction form
    555,247.67/766,257.49 = 313,566.57/x
  3. Step 3: Cross multiply
    555,247.67x = 766,257.49 × 313,566.57
  4. Step 4: Simplify right side
    555,247.67x = 240,272,732,876.11
  5. Step 5: Solve for x
    x = 240,272,732,876.11/555,247.67
  6. Step 6: Final answer
    x = 432,730.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.