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Finding the Fourth Proportional to 445,903.32, 668,461.20 and 341,189.76

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Solution

The fourth proportional to 445,903.32, 668,461.20 and 341,189.76 is: 511,483.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,903.32 : 668,461.20 = 341,189.76 : x
  2. Step 2: Convert to fraction form
    445,903.32/668,461.20 = 341,189.76/x
  3. Step 3: Cross multiply
    445,903.32x = 668,461.20 × 341,189.76
  4. Step 4: Simplify right side
    445,903.32x = 228,072,116,397.31
  5. Step 5: Solve for x
    x = 228,072,116,397.31/445,903.32
  6. Step 6: Final answer
    x = 511,483.33

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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.