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Finding the Fourth Proportional to 377,810.88, 521,360.30 and 208,013.28

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Solution

The fourth proportional to 377,810.88, 521,360.30 and 208,013.28 is: 287,048.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,810.88 : 521,360.30 = 208,013.28 : x
  2. Step 2: Convert to fraction form
    377,810.88/521,360.30 = 208,013.28/x
  3. Step 3: Cross multiply
    377,810.88x = 521,360.30 × 208,013.28
  4. Step 4: Simplify right side
    377,810.88x = 108,449,866,064.78
  5. Step 5: Solve for x
    x = 108,449,866,064.78/377,810.88
  6. Step 6: Final answer
    x = 287,048.02

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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.