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Finding the Fourth Proportional to 555,003.40, 832,140.60 and 217,840.90

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Solution

The fourth proportional to 555,003.40, 832,140.60 and 217,840.90 is: 326,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,003.40 : 832,140.60 = 217,840.90 : x
  2. Step 2: Convert to fraction form
    555,003.40/832,140.60 = 217,840.90/x
  3. Step 3: Cross multiply
    555,003.40x = 832,140.60 × 217,840.90
  4. Step 4: Simplify right side
    555,003.40x = 181,274,257,230.54
  5. Step 5: Solve for x
    x = 181,274,257,230.54/555,003.40
  6. Step 6: Final answer
    x = 326,618.28

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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.