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Finding the Fourth Proportional to 377,774.98, 521,332.95 and 208,015.18

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Solution

The fourth proportional to 377,774.98, 521,332.95 and 208,015.18 is: 287,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,774.98 : 521,332.95 = 208,015.18 : x
  2. Step 2: Convert to fraction form
    377,774.98/521,332.95 = 208,015.18/x
  3. Step 3: Cross multiply
    377,774.98x = 521,332.95 × 208,015.18
  4. Step 4: Simplify right side
    377,774.98x = 108,445,167,434.18
  5. Step 5: Solve for x
    x = 108,445,167,434.18/377,774.98
  6. Step 6: Final answer
    x = 287,062.86

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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.