Home / 280,151.13-386,609.70-152,829.39

Finding the Fourth Proportional to 280,151.13, 386,609.70 and 152,829.39

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Solution

The fourth proportional to 280,151.13, 386,609.70 and 152,829.39 is: 210,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,151.13 : 386,609.70 = 152,829.39 : x
  2. Step 2: Convert to fraction form
    280,151.13/386,609.70 = 152,829.39/x
  3. Step 3: Cross multiply
    280,151.13x = 386,609.70 × 152,829.39
  4. Step 4: Simplify right side
    280,151.13x = 59,085,324,619.08
  5. Step 5: Solve for x
    x = 59,085,324,619.08/280,151.13
  6. Step 6: Final answer
    x = 210,905.18

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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.