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Finding the Fourth Proportional to 629,357.12, 943,831.52 and 208,520

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Solution

The fourth proportional to 629,357.12, 943,831.52 and 208,520 is: 312,712.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,357.12 : 943,831.52 = 208,520 : x
  2. Step 2: Convert to fraction form
    629,357.12/943,831.52 = 208,520/x
  3. Step 3: Cross multiply
    629,357.12x = 943,831.52 × 208,520
  4. Step 4: Simplify right side
    629,357.12x = 196,807,748,550.40
  5. Step 5: Solve for x
    x = 196,807,748,550.40/629,357.12
  6. Step 6: Final answer
    x = 312,712.36

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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.