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Finding the Fourth Proportional to 228,685.56, 315,479.79 and 148,140.24

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Solution

The fourth proportional to 228,685.56, 315,479.79 and 148,140.24 is: 204,364.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,685.56 : 315,479.79 = 148,140.24 : x
  2. Step 2: Convert to fraction form
    228,685.56/315,479.79 = 148,140.24/x
  3. Step 3: Cross multiply
    228,685.56x = 315,479.79 × 148,140.24
  4. Step 4: Simplify right side
    228,685.56x = 46,735,251,805.75
  5. Step 5: Solve for x
    x = 46,735,251,805.75/228,685.56
  6. Step 6: Final answer
    x = 204,364.68

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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.