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Finding the Fourth Proportional to 493,851.30, 740,809.35 and 138,876.90

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Solution

The fourth proportional to 493,851.30, 740,809.35 and 138,876.90 is: 208,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,851.30 : 740,809.35 = 138,876.90 : x
  2. Step 2: Convert to fraction form
    493,851.30/740,809.35 = 138,876.90/x
  3. Step 3: Cross multiply
    493,851.30x = 740,809.35 × 138,876.90
  4. Step 4: Simplify right side
    493,851.30x = 102,881,306,019.02
  5. Step 5: Solve for x
    x = 102,881,306,019.02/493,851.30
  6. Step 6: Final answer
    x = 208,324.46

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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.