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Finding the Fourth Proportional to 278,818.83, 384,764.45 and 151,495.34

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Solution

The fourth proportional to 278,818.83, 384,764.45 and 151,495.34 is: 209,060.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,818.83 : 384,764.45 = 151,495.34 : x
  2. Step 2: Convert to fraction form
    278,818.83/384,764.45 = 151,495.34/x
  3. Step 3: Cross multiply
    278,818.83x = 384,764.45 × 151,495.34
  4. Step 4: Simplify right side
    278,818.83x = 58,290,018,491.36
  5. Step 5: Solve for x
    x = 58,290,018,491.36/278,818.83
  6. Step 6: Final answer
    x = 209,060.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.