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Finding the Fourth Proportional to 288,684.56, 398,368.60 and 159,615.56

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Solution

The fourth proportional to 288,684.56, 398,368.60 and 159,615.56 is: 220,260.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,684.56 : 398,368.60 = 159,615.56 : x
  2. Step 2: Convert to fraction form
    288,684.56/398,368.60 = 159,615.56/x
  3. Step 3: Cross multiply
    288,684.56x = 398,368.60 × 159,615.56
  4. Step 4: Simplify right side
    288,684.56x = 63,585,827,175.42
  5. Step 5: Solve for x
    x = 63,585,827,175.42/288,684.56
  6. Step 6: Final answer
    x = 220,260.57

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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.