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Finding the Fourth Proportional to 255,505.32, 352,597.68 and 139,218.18

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Solution

The fourth proportional to 255,505.32, 352,597.68 and 139,218.18 is: 192,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,505.32 : 352,597.68 = 139,218.18 : x
  2. Step 2: Convert to fraction form
    255,505.32/352,597.68 = 139,218.18/x
  3. Step 3: Cross multiply
    255,505.32x = 352,597.68 × 139,218.18
  4. Step 4: Simplify right side
    255,505.32x = 49,088,007,281.82
  5. Step 5: Solve for x
    x = 49,088,007,281.82/255,505.32
  6. Step 6: Final answer
    x = 192,121.27

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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.