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Finding the Fourth Proportional to 259,746.40, 389,619.60 and 240,306.40

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Solution

The fourth proportional to 259,746.40, 389,619.60 and 240,306.40 is: 360,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,746.40 : 389,619.60 = 240,306.40 : x
  2. Step 2: Convert to fraction form
    259,746.40/389,619.60 = 240,306.40/x
  3. Step 3: Cross multiply
    259,746.40x = 389,619.60 × 240,306.40
  4. Step 4: Simplify right side
    259,746.40x = 93,628,083,445.44
  5. Step 5: Solve for x
    x = 93,628,083,445.44/259,746.40
  6. Step 6: Final answer
    x = 360,459.60

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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.