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Finding the Fourth Proportional to 377,866.80, 521,432.55 and 208,100.93

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Solution

The fourth proportional to 377,866.80, 521,432.55 and 208,100.93 is: 287,166.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,866.80 : 521,432.55 = 208,100.93 : x
  2. Step 2: Convert to fraction form
    377,866.80/521,432.55 = 208,100.93/x
  3. Step 3: Cross multiply
    377,866.80x = 521,432.55 × 208,100.93
  4. Step 4: Simplify right side
    377,866.80x = 108,510,595,980.11
  5. Step 5: Solve for x
    x = 108,510,595,980.11/377,866.80
  6. Step 6: Final answer
    x = 287,166.26

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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.