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Finding the Fourth Proportional to 255,419.76, 352,478.88 and 142,269.24

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Solution

The fourth proportional to 255,419.76, 352,478.88 and 142,269.24 is: 196,331.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,419.76 : 352,478.88 = 142,269.24 : x
  2. Step 2: Convert to fraction form
    255,419.76/352,478.88 = 142,269.24/x
  3. Step 3: Cross multiply
    255,419.76x = 352,478.88 × 142,269.24
  4. Step 4: Simplify right side
    255,419.76x = 50,146,902,373.65
  5. Step 5: Solve for x
    x = 50,146,902,373.65/255,419.76
  6. Step 6: Final answer
    x = 196,331.33

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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.