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Finding the Fourth Proportional to 288,880.64, 398,755.48 and 198,535.66

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Solution

The fourth proportional to 288,880.64, 398,755.48 and 198,535.66 is: 274,048.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,880.64 : 398,755.48 = 198,535.66 : x
  2. Step 2: Convert to fraction form
    288,880.64/398,755.48 = 198,535.66/x
  3. Step 3: Cross multiply
    288,880.64x = 398,755.48 × 198,535.66
  4. Step 4: Simplify right side
    288,880.64x = 79,167,182,400.42
  5. Step 5: Solve for x
    x = 79,167,182,400.42/288,880.64
  6. Step 6: Final answer
    x = 274,048.07

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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.