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Finding the Fourth Proportional to 343,775.60, 515,663.40 and 107,137.28

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Solution

The fourth proportional to 343,775.60, 515,663.40 and 107,137.28 is: 160,705.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,775.60 : 515,663.40 = 107,137.28 : x
  2. Step 2: Convert to fraction form
    343,775.60/515,663.40 = 107,137.28/x
  3. Step 3: Cross multiply
    343,775.60x = 515,663.40 × 107,137.28
  4. Step 4: Simplify right side
    343,775.60x = 55,246,774,071.55
  5. Step 5: Solve for x
    x = 55,246,774,071.55/343,775.60
  6. Step 6: Final answer
    x = 160,705.92

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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.