Home / 278,256.20-417,335.90-128,483.82

Finding the Fourth Proportional to 278,256.20, 417,335.90 and 128,483.82

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Solution

The fourth proportional to 278,256.20, 417,335.90 and 128,483.82 is: 192,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,256.20 : 417,335.90 = 128,483.82 : x
  2. Step 2: Convert to fraction form
    278,256.20/417,335.90 = 128,483.82/x
  3. Step 3: Cross multiply
    278,256.20x = 417,335.90 × 128,483.82
  4. Step 4: Simplify right side
    278,256.20x = 53,620,910,012.72
  5. Step 5: Solve for x
    x = 53,620,910,012.72/278,256.20
  6. Step 6: Final answer
    x = 192,703.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.