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Finding the Fourth Proportional to 203,520.79, 280,535.16 and 160,430.41

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Solution

The fourth proportional to 203,520.79, 280,535.16 and 160,430.41 is: 221,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,520.79 : 280,535.16 = 160,430.41 : x
  2. Step 2: Convert to fraction form
    203,520.79/280,535.16 = 160,430.41/x
  3. Step 3: Cross multiply
    203,520.79x = 280,535.16 × 160,430.41
  4. Step 4: Simplify right side
    203,520.79x = 45,006,370,738.22
  5. Step 5: Solve for x
    x = 45,006,370,738.22/203,520.79
  6. Step 6: Final answer
    x = 221,138.93

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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.