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Finding the Fourth Proportional to 259,854.40, 389,781.60 and 112,110.40

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Solution

The fourth proportional to 259,854.40, 389,781.60 and 112,110.40 is: 168,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,854.40 : 389,781.60 = 112,110.40 : x
  2. Step 2: Convert to fraction form
    259,854.40/389,781.60 = 112,110.40/x
  3. Step 3: Cross multiply
    259,854.40x = 389,781.60 × 112,110.40
  4. Step 4: Simplify right side
    259,854.40x = 43,698,571,088.64
  5. Step 5: Solve for x
    x = 43,698,571,088.64/259,854.40
  6. Step 6: Final answer
    x = 168,165.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.