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Finding the Fourth Proportional to 255,625.38, 352,763.72 and 153,709.20

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Solution

The fourth proportional to 255,625.38, 352,763.72 and 153,709.20 is: 212,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,625.38 : 352,763.72 = 153,709.20 : x
  2. Step 2: Convert to fraction form
    255,625.38/352,763.72 = 153,709.20/x
  3. Step 3: Cross multiply
    255,625.38x = 352,763.72 × 153,709.20
  4. Step 4: Simplify right side
    255,625.38x = 54,223,028,421.68
  5. Step 5: Solve for x
    x = 54,223,028,421.68/255,625.38
  6. Step 6: Final answer
    x = 212,119.11

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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.