Home / 377,887.20-521,480.88-208,117.68

Finding the Fourth Proportional to 377,887.20, 521,480.88 and 208,117.68

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Solution

The fourth proportional to 377,887.20, 521,480.88 and 208,117.68 is: 287,200.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,887.20 : 521,480.88 = 208,117.68 : x
  2. Step 2: Convert to fraction form
    377,887.20/521,480.88 = 208,117.68/x
  3. Step 3: Cross multiply
    377,887.20x = 521,480.88 × 208,117.68
  4. Step 4: Simplify right side
    377,887.20x = 108,529,390,909.96
  5. Step 5: Solve for x
    x = 108,529,390,909.96/377,887.20
  6. Step 6: Final answer
    x = 287,200.50

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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.