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Finding the Fourth Proportional to 555,271.46, 766,231 and 313,577.88

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Solution

The fourth proportional to 555,271.46, 766,231 and 313,577.88 is: 432,712.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,271.46 : 766,231 = 313,577.88 : x
  2. Step 2: Convert to fraction form
    555,271.46/766,231 = 313,577.88/x
  3. Step 3: Cross multiply
    555,271.46x = 766,231 × 313,577.88
  4. Step 4: Simplify right side
    555,271.46x = 240,273,092,570.28
  5. Step 5: Solve for x
    x = 240,273,092,570.28/555,271.46
  6. Step 6: Final answer
    x = 432,712.84

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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.