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Finding the Fourth Proportional to 255,673.92, 352,827.62 and 139,387.38

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Solution

The fourth proportional to 255,673.92, 352,827.62 and 139,387.38 is: 192,353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,673.92 : 352,827.62 = 139,387.38 : x
  2. Step 2: Convert to fraction form
    255,673.92/352,827.62 = 139,387.38/x
  3. Step 3: Cross multiply
    255,673.92x = 352,827.62 × 139,387.38
  4. Step 4: Simplify right side
    255,673.92x = 49,179,717,543.44
  5. Step 5: Solve for x
    x = 49,179,717,543.44/255,673.92
  6. Step 6: Final answer
    x = 192,353.28

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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.