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Finding the Fourth Proportional to 268,224.40, 402,336.60 and 143,808.40

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Solution

The fourth proportional to 268,224.40, 402,336.60 and 143,808.40 is: 215,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,224.40 : 402,336.60 = 143,808.40 : x
  2. Step 2: Convert to fraction form
    268,224.40/402,336.60 = 143,808.40/x
  3. Step 3: Cross multiply
    268,224.40x = 402,336.60 × 143,808.40
  4. Step 4: Simplify right side
    268,224.40x = 57,859,382,707.44
  5. Step 5: Solve for x
    x = 57,859,382,707.44/268,224.40
  6. Step 6: Final answer
    x = 215,712.60

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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.