Home / 280,068.68-386,380.50-171,116.36

Finding the Fourth Proportional to 280,068.68, 386,380.50 and 171,116.36

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Solution

The fourth proportional to 280,068.68, 386,380.50 and 171,116.36 is: 236,070.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,068.68 : 386,380.50 = 171,116.36 : x
  2. Step 2: Convert to fraction form
    280,068.68/386,380.50 = 171,116.36/x
  3. Step 3: Cross multiply
    280,068.68x = 386,380.50 × 171,116.36
  4. Step 4: Simplify right side
    280,068.68x = 66,116,024,734.98
  5. Step 5: Solve for x
    x = 66,116,024,734.98/280,068.68
  6. Step 6: Final answer
    x = 236,070.75

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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.