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Finding the Fourth Proportional to 377,825.61, 521,400.11 and 208,060.05

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Solution

The fourth proportional to 377,825.61, 521,400.11 and 208,060.05 is: 287,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,825.61 : 521,400.11 = 208,060.05 : x
  2. Step 2: Convert to fraction form
    377,825.61/521,400.11 = 208,060.05/x
  3. Step 3: Cross multiply
    377,825.61x = 521,400.11 × 208,060.05
  4. Step 4: Simplify right side
    377,825.61x = 108,482,531,916.31
  5. Step 5: Solve for x
    x = 108,482,531,916.31/377,825.61
  6. Step 6: Final answer
    x = 287,123.29

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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.