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Finding the Fourth Proportional to 483,875.57, 725,830.67 and 128,890.85

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Solution

The fourth proportional to 483,875.57, 725,830.67 and 128,890.85 is: 193,340.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,875.57 : 725,830.67 = 128,890.85 : x
  2. Step 2: Convert to fraction form
    483,875.57/725,830.67 = 128,890.85/x
  3. Step 3: Cross multiply
    483,875.57x = 725,830.67 × 128,890.85
  4. Step 4: Simplify right side
    483,875.57x = 93,552,928,705.44
  5. Step 5: Solve for x
    x = 93,552,928,705.44/483,875.57
  6. Step 6: Final answer
    x = 193,340.88

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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.