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Finding the Fourth Proportional to 454,596.64, 681,929.52 and 139,077.28

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Solution

The fourth proportional to 454,596.64, 681,929.52 and 139,077.28 is: 208,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,596.64 : 681,929.52 = 139,077.28 : x
  2. Step 2: Convert to fraction form
    454,596.64/681,929.52 = 139,077.28/x
  3. Step 3: Cross multiply
    454,596.64x = 681,929.52 × 139,077.28
  4. Step 4: Simplify right side
    454,596.64x = 94,840,902,793.31
  5. Step 5: Solve for x
    x = 94,840,902,793.31/454,596.64
  6. Step 6: Final answer
    x = 208,626.49

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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.