Home / 280,100.20-386,526.56-152,768.20

Finding the Fourth Proportional to 280,100.20, 386,526.56 and 152,768.20

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Solution

The fourth proportional to 280,100.20, 386,526.56 and 152,768.20 is: 210,813.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,100.20 : 386,526.56 = 152,768.20 : x
  2. Step 2: Convert to fraction form
    280,100.20/386,526.56 = 152,768.20/x
  3. Step 3: Cross multiply
    280,100.20x = 386,526.56 × 152,768.20
  4. Step 4: Simplify right side
    280,100.20x = 59,048,966,823.39
  5. Step 5: Solve for x
    x = 59,048,966,823.39/280,100.20
  6. Step 6: Final answer
    x = 210,813.73

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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.