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Finding the Fourth Proportional to 255,741.69, 352,854.30 and 145,358.79

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Solution

The fourth proportional to 255,741.69, 352,854.30 and 145,358.79 is: 200,555.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,741.69 : 352,854.30 = 145,358.79 : x
  2. Step 2: Convert to fraction form
    255,741.69/352,854.30 = 145,358.79/x
  3. Step 3: Cross multiply
    255,741.69x = 352,854.30 × 145,358.79
  4. Step 4: Simplify right side
    255,741.69x = 51,290,474,094.30
  5. Step 5: Solve for x
    x = 51,290,474,094.30/255,741.69
  6. Step 6: Final answer
    x = 200,555.78

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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.