Home / 280,128.60-419,901.30-153,574.20

Finding the Fourth Proportional to 280,128.60, 419,901.30 and 153,574.20

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Solution

The fourth proportional to 280,128.60, 419,901.30 and 153,574.20 is: 230,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,128.60 : 419,901.30 = 153,574.20 : x
  2. Step 2: Convert to fraction form
    280,128.60/419,901.30 = 153,574.20/x
  3. Step 3: Cross multiply
    280,128.60x = 419,901.30 × 153,574.20
  4. Step 4: Simplify right side
    280,128.60x = 64,486,006,226.46
  5. Step 5: Solve for x
    x = 64,486,006,226.46/280,128.60
  6. Step 6: Final answer
    x = 230,201.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.