Home / 280,353.15-386,884.76-172,880.19

Finding the Fourth Proportional to 280,353.15, 386,884.76 and 172,880.19

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Solution

The fourth proportional to 280,353.15, 386,884.76 and 172,880.19 is: 238,573.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,353.15 : 386,884.76 = 172,880.19 : x
  2. Step 2: Convert to fraction form
    280,353.15/386,884.76 = 172,880.19/x
  3. Step 3: Cross multiply
    280,353.15x = 386,884.76 × 172,880.19
  4. Step 4: Simplify right side
    280,353.15x = 66,884,709,952.50
  5. Step 5: Solve for x
    x = 66,884,709,952.50/280,353.15
  6. Step 6: Final answer
    x = 238,573.06

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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.