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Finding the Fourth Proportional to 297,125.57, 445,719.60 and 86,764.10

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Solution

The fourth proportional to 297,125.57, 445,719.60 and 86,764.10 is: 130,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,125.57 : 445,719.60 = 86,764.10 : x
  2. Step 2: Convert to fraction form
    297,125.57/445,719.60 = 86,764.10/x
  3. Step 3: Cross multiply
    297,125.57x = 445,719.60 × 86,764.10
  4. Step 4: Simplify right side
    297,125.57x = 38,672,459,946.36
  5. Step 5: Solve for x
    x = 38,672,459,946.36/297,125.57
  6. Step 6: Final answer
    x = 130,155.27

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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.