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Finding the Fourth Proportional to 255,308.96, 352,379.76 and 153,339.16

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Solution

The fourth proportional to 255,308.96, 352,379.76 and 153,339.16 is: 211,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,308.96 : 352,379.76 = 153,339.16 : x
  2. Step 2: Convert to fraction form
    255,308.96/352,379.76 = 153,339.16/x
  3. Step 3: Cross multiply
    255,308.96x = 352,379.76 × 153,339.16
  4. Step 4: Simplify right side
    255,308.96x = 54,033,616,399.40
  5. Step 5: Solve for x
    x = 54,033,616,399.40/255,308.96
  6. Step 6: Final answer
    x = 211,640.11

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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.