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Finding the Fourth Proportional to 483,506.50, 725,258.96 and 128,520.53

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Solution

The fourth proportional to 483,506.50, 725,258.96 and 128,520.53 is: 192,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,506.50 : 725,258.96 = 128,520.53 : x
  2. Step 2: Convert to fraction form
    483,506.50/725,258.96 = 128,520.53/x
  3. Step 3: Cross multiply
    483,506.50x = 725,258.96 × 128,520.53
  4. Step 4: Simplify right side
    483,506.50x = 93,210,665,926.45
  5. Step 5: Solve for x
    x = 93,210,665,926.45/483,506.50
  6. Step 6: Final answer
    x = 192,780.59

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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.