Home / 280,205.86-420,594.70-205,102.92

Finding the Fourth Proportional to 280,205.86, 420,594.70 and 205,102.92

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Solution

The fourth proportional to 280,205.86, 420,594.70 and 205,102.92 is: 307,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,205.86 : 420,594.70 = 205,102.92 : x
  2. Step 2: Convert to fraction form
    280,205.86/420,594.70 = 205,102.92/x
  3. Step 3: Cross multiply
    280,205.86x = 420,594.70 × 205,102.92
  4. Step 4: Simplify right side
    280,205.86x = 86,265,201,106.52
  5. Step 5: Solve for x
    x = 86,265,201,106.52/280,205.86
  6. Step 6: Final answer
    x = 307,863.66

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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.