Home / 255,428.21-352,437-147,991.70

Finding the Fourth Proportional to 255,428.21, 352,437 and 147,991.70

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Solution

The fourth proportional to 255,428.21, 352,437 and 147,991.70 is: 204,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,428.21 : 352,437 = 147,991.70 : x
  2. Step 2: Convert to fraction form
    255,428.21/352,437 = 147,991.70/x
  3. Step 3: Cross multiply
    255,428.21x = 352,437 × 147,991.70
  4. Step 4: Simplify right side
    255,428.21x = 52,157,750,772.90
  5. Step 5: Solve for x
    x = 52,157,750,772.90/255,428.21
  6. Step 6: Final answer
    x = 204,197.30

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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.