Home / 377,890.12-521,511.98-208,124.20

Finding the Fourth Proportional to 377,890.12, 521,511.98 and 208,124.20

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Solution

The fourth proportional to 377,890.12, 521,511.98 and 208,124.20 is: 287,224.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,890.12 : 521,511.98 = 208,124.20 : x
  2. Step 2: Convert to fraction form
    377,890.12/521,511.98 = 208,124.20/x
  3. Step 3: Cross multiply
    377,890.12x = 521,511.98 × 208,124.20
  4. Step 4: Simplify right side
    377,890.12x = 108,539,263,627.92
  5. Step 5: Solve for x
    x = 108,539,263,627.92/377,890.12
  6. Step 6: Final answer
    x = 287,224.40

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1.5x scale

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.