Home / 209,331.84-288,961.60-128,792.32

Finding the Fourth Proportional to 209,331.84, 288,961.60 and 128,792.32

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Solution

The fourth proportional to 209,331.84, 288,961.60 and 128,792.32 is: 177,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,331.84 : 288,961.60 = 128,792.32 : x
  2. Step 2: Convert to fraction form
    209,331.84/288,961.60 = 128,792.32/x
  3. Step 3: Cross multiply
    209,331.84x = 288,961.60 × 128,792.32
  4. Step 4: Simplify right side
    209,331.84x = 37,216,034,854.91
  5. Step 5: Solve for x
    x = 37,216,034,854.91/209,331.84
  6. Step 6: Final answer
    x = 177,784.87

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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.