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Finding the Fourth Proportional to 445,906.80, 668,929.74 and 146,319.18

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Solution

The fourth proportional to 445,906.80, 668,929.74 and 146,319.18 is: 219,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,906.80 : 668,929.74 = 146,319.18 : x
  2. Step 2: Convert to fraction form
    445,906.80/668,929.74 = 146,319.18/x
  3. Step 3: Cross multiply
    445,906.80x = 668,929.74 × 146,319.18
  4. Step 4: Simplify right side
    445,906.80x = 97,877,251,034.41
  5. Step 5: Solve for x
    x = 97,877,251,034.41/445,906.80
  6. Step 6: Final answer
    x = 219,501.59

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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.