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Finding the Fourth Proportional to 377,885.86, 521,458.56 and 208,119.98

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Solution

The fourth proportional to 377,885.86, 521,458.56 and 208,119.98 is: 287,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,885.86 : 521,458.56 = 208,119.98 : x
  2. Step 2: Convert to fraction form
    377,885.86/521,458.56 = 208,119.98/x
  3. Step 3: Cross multiply
    377,885.86x = 521,458.56 × 208,119.98
  4. Step 4: Simplify right side
    377,885.86x = 108,525,946,381.68
  5. Step 5: Solve for x
    x = 108,525,946,381.68/377,885.86
  6. Step 6: Final answer
    x = 287,192.40

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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.