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Finding the Fourth Proportional to 478,690.54, 660,596.96 and 263,831.15

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Solution

The fourth proportional to 478,690.54, 660,596.96 and 263,831.15 is: 364,089.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,690.54 : 660,596.96 = 263,831.15 : x
  2. Step 2: Convert to fraction form
    478,690.54/660,596.96 = 263,831.15/x
  3. Step 3: Cross multiply
    478,690.54x = 660,596.96 × 263,831.15
  4. Step 4: Simplify right side
    478,690.54x = 174,286,057,954.37
  5. Step 5: Solve for x
    x = 174,286,057,954.37/478,690.54
  6. Step 6: Final answer
    x = 364,089.21

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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.